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Select a representative natural ecosystem in your area or one in which you are interested such as a lake, preserve, or park—that is managed for native species.
Write a 700- to 1,050-word paper explaining the following:
•The major structural and functional dynamics of your selected ecosystem
•How humans may have affected the cycling of matter in ecosystems, including effects to the nitrogen, phosphorus, or carbon cycle
•How knowledge about that ecosystem’s structure and function can help or has helped to develop plans for its restoration or management
•The implication of species interactions on your selected ecosystem
Include two outside references.

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1. Determine the two chi-squared (χ2) critical values for the following confidence levels and sample sizes.
a. 95% and n=36
b. 99% and n=18
2. We are also interested in estimating the population standard deviation (σ) for all FHSU students’ IQ score. We will assume that IQ scores are at least approximately normally distributed. Below are the IQ scores of 30 randomly chosen students from FHSU campus.
135 127 104 139 133 114 110 137 141 118
115 118 121 141 112 134 115 132 132 118
127 116 136 132 117 129 116 109 115 129
Construct a 95% confidence interval estimate of sigma (σ), the population standard deviation.
3. Assume you need to build a confidence interval for a population mean within some given situation. Naturally, you must determine whether you should use either the t-distribution or the z-distribution or possibly even neither based upon the information known/collected in the situation. Thus, based upon the information provided for each situation below, determine which (t-, z- or neither) distribution is appropriate. Then if you can use either a t- or z- distribution, give the associated critical value (critical t- or z- score) from that distribution to reach the given confidence level.
a. 95% confidence n=40 σ known population data believed to be normally distributed
Appropriate distribution:
Associated critical value:
b. 90% confidence n=31 σ unknown population data believed to be normally distributed
Appropriate distribution:
Associated critical value:
c. 99% confidence n=29 σ unknown population data believed to be skewed right
Appropriate distribution:
Associated critical value:
d. 98% confidence n=100 σ known population data believed to be very skewed
Appropriate distribution:
Associated critical value:
4. (Multiple Choice) A hypothesis test is used to test a claim. Suppose the test is left-tailed and the critical value is -2.75. If the collected sample’s test statistic is -2.15, which of the following is the correct decision statement for the test?
A. Fail to reject the null hypothesis
B. Fail to reject the alternative hypothesis
C. Reject the null hypothesis
D. Reject the alternative hypothesis
5. (Multiple Choice) A hypothesis test is used to test a claim. Suppose the P value for a hypothesis test is .008, and the significance level is 0.01. Then which of the following is the correct decision statement for the test?
A. Fail to reject the null hypothesis
B. Fail to reject the alternative hypothesis
C. Reject the null hypothesis
D. Reject the alternative hypothesis
6. (Multiple Choice) Type II error is:
A. Rejecting a true null hypothesis
B. Rejecting a false null hypothesis
C. Failing to reject a false null hypothesis
D. Failing to reject a true null hypothesis
7. It is claimed that more than 75% of college students in Kansas take education loans. Last year 97 out of 120 randomly selected college students from Kansas reported that they had student loans. Conduct a hypothesis test to determine if the proportion of students who have student loan is more than 75% as claimed. Use a 10% significance level.
a. Is the above information sufficient for you to be absolutely certain that more than 75% of all students of Kansas have education loans? Why or why not?
b. In establishing a statistical hypothesis testing of this situation, give the required null and alternative hypotheses for such a test, if the claim is that more than 75% of the Kansas college students have education loans.
H0:
H1:
c. Based on your answer in part b, should you use a right-tailed, a left-tailed, or a two-tailed test? Briefly explain how one determines which of the three possibilities is to be used.
d. Describe the possible Type I error for this situation–make sure to state the error in terms of the percent of Kansas college students with education loans.
e. Describe the possible Type II error for this situation–make sure to state the error in terms of the percent of Kansas college students with education loans.
f. Determine the appropriate critical value(s) for this situation.
g. Determine/calculate the value of the sample test statistic.
h. Detemine the P-value.
i. Based upon your work above, is there statistically sufficient evidence in this sample to support that more than 75% of Kansas college students have education loans? Briefly explain your reasoning.
8. It is claimed that the national average for the price of gasoline is $3.42 per gallon. Listed below are gas prices from a sample of 32 gas stations from Kansas. At the 5% significance level, follow the steps below to conduct a hypothesis test determine if the average price of gasoline in Kansas is significantly different than the national average of $3.42.
3.15 3.27 3.14 3.38 3.49 3.12 3.22 3.31
3.58 3.76 3.26 3.59 3.73 3.12 3.62 3.52
3.08 3.28 2.98 3.33 3.48 3.18 3.28 3.28
3.48 3.46 3.48 3.11 3.48 2.88 3.23 3.48
a. Give the null and alternative hypotheses for this test in symbolic form.
H0:
H1:
b. Determine the value of the test statistic.
c. Determine the appropriate critical value(s).
d Detemine the P-value.
e. Is there sufficient evidence to support the claim that average price of gasoline in Kansas is significantly different than the national average of $3.42.
9. Captoril is a drug to lower systolic blood pressure. When seven randomly selected subjects were treated with this drug, their systolic pressure reading (in MM Hg) were measured before and after the drug was taken. Using a 1% significance level, is there sufficient evidence to support the claim that Captoril is effective in lowering the systolic blood pressure? Perform an appropriate hypothesis test showing necessary statistical evidence to support your final given conclusion.
PreTest PostTest
200 160
175 171
198 177
170 167
193 176
209 183
155 145
10. Multiple Choice:
For each of the following data sets, choose the most appropriate response from the choices below the table.
Data Set #1 Data Set #2
x y x y
7.4 23.9 -1 -4
23.9 75.1 -2 -10
16.6 55.7 2 5
21.8 68.5 3 4
7 22 -3 -19
13.5 48.3 6 -10
20.9 67.7 7 -20
9.7 30.5 -1 -4
10.4 36 0 1
A. A strong positive linear relation exists A. A strong positive linear relation exists
B. A strong negative linear relation exists B. A strong negative linear relation exists
C. A curvilinear relation exists C. A nonlinear relation exists
D. No relation exists D. No relation exists
11. Create a paired data set with five data points (i.e., five x-values and five corresponding y-values) with a strong (but not perfect) positive linear correlation. Determine the correlation coefficient value for your data.
x y
12. To answer the following, use the list below that contains information on the age of 12 female staffs in FHSU and their corresponding pulse rate.
Ages Pulse rates
42 98
34 80
49 98
27 63
42 84
18 49
41 80
21 55
21 56
19 53
19 61
30 74
a. Construct a scatterplot for this data set in the region to the right (ages as the independent variable, and pulse rate as the dependent.)
b. Based on the scatterplot, does it look like a linear regression model is appropriate for this data? Why or why not?
c. Add the line-of-best fit (trend line/linear regression line) to your scatterplot. Give the equation of the trend line below.
d. Determine the value of the correlation coefficient. Explain what the value tells you about the data pairs?
e. Does the value of the correlation coefficient tell you there is or is not statistically significant evidence that a linear correlation exists between the variables? Explain your position. (HINT: application of table A-6 is needed!)
f. What is the predicted pulse rate of a female staff who is 50 years old.
g. What is the predicted age of a female staff whose pulse rate is 64?

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Question 1
A liter bag of fluid is hung at 7 p.m. and runs at 100 mL/hr. How long will it last?
Choose one answer.
a. 8 hrs
b. 10 hrs
c. 12 hrs
Question 2
A patient is getting D10W infused at 50 mL/hr using a 10 drop set. How many grams of dextrose is the patient receiving per hour?
Choose one answer.
a. 10 g/hr
b. 50 g/hr
c. 5 g/hr
Question 3
A patient is to be given 1750 mL at 95 mL/hr. What will the drop rate be if a 15 drop set is used? (Round to whole number)
Choose one answer.
a. 24 gtts/min
b. 15 gtts/min
c. 95 gtts/min
Question 4
A patient is to receive 2 g of medication in 150 mL over 90 minutes. What is the flow rate in milliliters per hour?
Choose one answer.
a. 100 mL/hr
b. 150 mL/hr
c. 50 mL/hr
Question 5
A patient needs 35% dextrose 500 mL. The pharmacy has only 70% dextrose 1000 mL. How much concentrate will you need?
Choose one answer.
a. 350 mL
b. 500 mL
c. 250 mL

Question 6
A patient uses 20 units of insulin in the morning and 18 units of insulin each evening. How many units total does the patient use daily?
Choose one answer.
a. 12 units
b. 38 units
c. 18 units
Question 7
A pediatric patient weighs 5.45 kg and has a length of 21 inches. The manufacturer of amoxicillin has a recommended dose of 20 to 40 mg/kg per day. The physician has ordered 125 mg tid. What is the recommended minimum dose per day?
Choose one answer.
a. 109 mg
b. 215 mg
c. 420 mg
Question 8
Calculate the amount of concentrate and diluent for each of the following compounds. A drug is supplied as a 40 mg/mL solution in a 50 mL vial. You need to make 10mL of a 10mg/mL solution. How much concentrate and diluent will be needed?
Choose one answer.
a. c=7.5mL d=2.5mL
b. c=2.5mL d=7.5mL
c. c= 4 mL d=6 mL
Question 9
Calculate the amount of concentrate and diluent for each of the following compounds. Prepare 8 mL of a 5 mg/mL hydrocortisone solution from a 100 mg/2 mL stock solution. How many milliliters of hydrocortisone and diluent are needed?
Choose one answer.
a. H=0.2 mL D=7.8 mL
b. H=2 mL D=6.1 mL
c. H=0.8 mL D=7.2 mL

Question 10
Calculate the amount of drug in a ratio solution. How many micrograms are in 1.4 mL of a 1:2000 solution?
Choose one answer.
a. 70 mcg
b. 7000 mcg
c. 700 mcg

Question 11
Calculate the amount of drug in a ratio solution. How many micrograms are in 1 mL of a 1:5000 solution?
Choose one answer.
a. 20 mcg
b. 200 mcg
c. 2000 mcg
Question 12
Calculate the amount of drug in milligrams for the following dispensed containers. Ketoconazole 2%, 7 fl oz shampoo.
Choose one answer.
a. 4.2 mg
b. 4200 mg
c. 4.2 mg

Question 13
Calculate the amount of medication in the following doses. How many milligrams are in 1 tbsp of a 0.5% drug product?
Choose one answer.
a. 0.075 mg
b. 7.5 mg
c. 75 mg

Question 14
Calculate the following BSA-based doses based on the provided recommended dose. Methotrexate is to be given at 3.3 mg/m2 The patient has a BSA of 0.83 m2. What will the dose be?
Choose one answer.
a. 2.74 mg
b. 27.4 mg
c. 0.27 mg

Question 15
Calculate the following BSA-based doses based on the provided recommended dose. The medication order for a patient says that the dose is to be based on 100 mg/m2. If this patient has a BSA of 0.85 m2, how much will be prepared?
Choose one answer.
a. 850 mg
b. 8.5 mg
c. 85 mg

Question 16
Calculate the following doses in mg/mL and then determine the infusion rate in mL/hr. Medication order: cefotetan 2 g Q12 hours over 30 min. Available stock: cetofetan 2 g in 50 mL
Choose one answer.
a. 40 mg/mL; 50 mL/hr
b. 40 mg/mL; 100 mL/hr
c. 200 mg/mL; 100 mL/hr

Question 17
Calculate the following. If a patient drinks 8 fl oz of 2% milk, how many grams of fat were consumed?
Choose one answer.
a. 8.4g
b. 4.8 g
c. 16 g

Question 18
Calculate the following weight-based doses based on the provided recommended dose. A patient weighs 68.64 kg and is to be dosed at 125 mg/kg. How many milligrams is this?
Choose one answer.
a. 8500 mg
b. 8580 mg
c. 858 mg

Question 19
Calculate the following weight-based doses based on the provided recommended dose. A postsurgical patient is to receive 125 mg/kg per day of cephalosporin divided into six doses daily. What will each dose be for a patient weighing 87 kg?
Choose one answer.
a. 1812.5 mg
b. 1800 mg
c. 2718.75 mg

Question 20
Calculate the percentage of dextrose if 45g are added to 500 mL of sterile water.
Choose one answer.
a. 90%
b. 9%
c. 0.9%

Question 21
Calculate the percentage of drug in the following drug formulations. Morphine sulfate 10 mg/2.5 mL
Choose one answer.
a. 0.4%
b. 4%
c. 4.4%

Question 22
Calculate the quantity of drug in an injectable solution. How many milligrams are in 2.8 mL of a 5 g/10 mL solution?
Choose one answer.
a. 1 mg
b. 4 mg
c. 1400 mg
Question 23
Calculate the volume of solution needed for each requested dose. How many milliliters of 1:300 solution are needed to provide a 600 mg dose?
Choose one answer.
a. 18 mL
b. 1800 mL
c. 180 mL

Question 24:
Determine the infusion rates in drops per minute for the following order. Give 60 mL over 30 minutes using a 10 drop set.
Choose one answer.
a. 30 gtts/min
b. 20 gtts/min
c. 10 gtts/min
Question 25
Express the following as weight-in-weight, weight-in-volume, or volume-in-volume percentages. Express ciclopirox 8% topical solution as a weight-in-volume (w/v).
Choose one answer.
a. 8 mg/100 ml
b. 8 g/100 ml
c. 80 g/ 100 ml

Question 26
How many grams of dextrose are in the following volumes of D10W (10%)2300 mL ?
Choose one answer.
a. 23 g
b. 230 g
c. 2300 g
Question 27
How many grams of dextrose are in the following volumes of D5W (5%) 385 mL ?
Choose one answer.
a. 192 g
b. 1.92 g
c. 19.25 g
Question 28
How many grams of NaCl are in the following volumes of 1/2NS (0.45%) 2600 mL ?
Choose one answer.
a. 26 g
b. 11.7 g
c. 1.7 g
Question 29
How many grams of NaCl are in the following volumes of NS (0.9%) 250 mL ?
Choose one answer.
a. 2.25 g
b. 4.25 g
c. 0.3 g

Question 30
How many milliliters are needed to provide 2.5 g of medication if the solution available is 750 mg/4 mL?
Choose one answer.
a. 13.3 mL
b. 0.3 mL
c. 1.3 mL
Question 31
How many milliliters are needed to provide 80 mg of medication if the solution available is 100 mg/5 mL?
Choose one answer.
a. 4 mL
b. 6 mL
c. 9 mL

Question 32
If 2000 mL is to be administered over 8 hours, what is the infusion rate in milliliters per hour?
Choose one answer.
a. 500 mL/hr
b. 200 mL/hr
c. 250 mL/hr

Question 33
Interpret the following prescriptions and provide the requested rates.

Medication: Solu-Cortef (hydrocortisone) 250 mg
Fluid volume: 250 mL
Time of infusion: 4 hr
How many milliliters per hour?
Choose one answer.
a. 60 mL
b. 62.5 mL
c. 65 mL
Question 34
Interpret the following prescriptions and provide the requested rates. Medication: Intropin (dopamine hydrochloride) 800 mg, Dose: 12 mcg/kg/min, Patient weight: 198 lb, Fluid volume: 500 mL. How many milliliters per hour?
Choose one answer.
a. 60.5 mL/hr
b. 20 mL/hr
c. 40.5 mL/hr
Question 35
Using the above information, how many milligrams per hour?
Choose one answer.
a. 64.8 mg/hr
b. 42.4 mg/hr
c. 75 mg/hr

Question 36
Perform the necessary calculations to answer the following. A 20% potassium chloride solution has a strength of 40 mEq in 15 mL. If you fill an order for 20 mEq, how many milliliters are needed?
Choose one answer.
a. 7.5 mL
b. 10 mL
c. 15 mL
Question 37
Perform the necessary calculations to answer the following. Bicillin CR is given as an intramuscular injection preparation. It comes as 600,000 units/mL and the dose is 1.5 million units. What is the volume to be administered?
Choose one answer.
a. 2.5 mL
b. 2 mL
c. 3.5 mL

Question 38
Prepare 2400 g of coal tar ointment 20%. You have on hand coal tar solution and ointment base. How much of each will be needed?
Choose one answer.
a. C=480 g, O=1920 g
b. C=1200 g, O=1200 g
c. C=960 g, O=1440 g

Question 39.
Prepare 30 mL of a 1:200 solution by combining a 1:10 and a 1:400 solution. How much of each solution will be needed?
Choose one answer.
a. 1:10=0.77 mL, 1:400=29.23 mL
b. 1:10=1 mL, 1:400=29 mL
c. 1:10=1.4 mL, 1:400=28.6 mL

Question 40
Prepare 500 mL of 12.5% dextrose using D10W and D20W. How much of each is needed?
Choose one answer.
a. D20 = 100 mL, D10=400 mL
b. 20%=125 mL, 10%=375 mL
c. D20=150 mL, D10=350 mL

Question 41.
Prepare 500 mL of a 15% dextrose solution using D5W and D50W. How much of each solution will be needed?
Choose one answer.
a. D50=111 mL, D5=389 mL
b. D50=100 mL, D5=400 mL
c. D50=150 mL, D5=350 mL

Question 42
Prepare 5 mL of a 5 mcg/mL dilution from a stock drug of 50 mcg/mL. How much drug and diluent are needed?
Choose one answer.
a. drug=0.5 mL dil= 4.5 mL
b. drug=1 mL dil= 4mL
c. drug=4mL dil=1mL

Question 43.
Use the alligation method to answer the following problems. Prepare 400 mL of D8W from D20W and sterile water for injection (SWFI). How much of each will be needed? (Note: water is considered to be 0% solution.)
Choose one answer.
a. D=160 mL, SW=240 mL
b. D=200 mL, SW=200 mL
c. D=230 mL, SW =170 mL
Question 44
Use the correct formula to determine the following BSA (m2) values. (Round to the hundredth place) Adult: 71 inches, 76 kg
Choose one answer.
a. 1.59 m2
b. 3.79 m2
c. 1.95 m2
Question 45
Use the correct formula to determine the following BSA (m2) values. (Round to the hundredth place) Child of normal height and weight: 34 inches, 32 lb
Choose one answer.
a. 5.8 m2
b. 0.59 m2
c. 0.35 m2
Question 46
Use the following formula to prepare 150 vaginal suppositories. How much of each ingredient will you weigh out? Progesterone 2.4 g Polythylene glycol 3350 30 g Polyethylene glycol 1000 90 g Yields 30 vaginal suppositories
Choose one answer.
a. 4.8g, 60g, 180g
b. 12g, 150g, 450g
c. 6g, 75g, 225g

Question 47
Using the alligation medial method, determine the resulting concentration for each of the following compounds. You have mixed equal parts of a 20% and a 5% benzocaine ointment. What is the resulting concentration?
Choose one answer.
a. 10%
b. 12%
c. 12.5%

Question 48
You have mixed 1 L of solution containing 15% alcohol, 500 mL of solution containing 3 % alcohol, and 300 mL of solution containing 70% alcohol. What is the resulting concentration?
Choose one answer.
a. 20.8%
b. 29.3%
c. 40.2%
Question 49
Prepare 1 L of an 80% alcohol from a 70% solution and a 100% solution. How much of each do you need to measure out?
Choose one answer.
a. 100% = 350 mL; 70% = 650 mL
b. 100% = 333 mL; 70% = 667 mL
c. 100% = 300 mL; 70% = 700 mL
Question 50
How many milligrams are in 1.3 mL of an 80mg/2mL solution?
Choose one answer.
a. 52 mg
b. 5.2 mg
c. 25 mg

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1. Which of the following groups benefitted the least from the prosperity of the second industrial revolution?
A. Factory workers B. Textile workers C. Railroad workers D. Farmers

2. Which of the following statements is most accurate regarding America’s political climate between 1876 and 1896?
A. The influence of the president over Congress diminished.
B. Southern states tended to vote Republican.
C. Little political power or influence was left to the states.
D. The party that won the presidential election also controlled Congress.

3. As its intellectual voice, ______ became the leader of the Harlem Renaissance.
A. W. E. B. Du Bois B. F. Scott Fitzgerald C. H. L. Mencken D. Claude McKay

4. The ___________ expressed the darkest and most ominous aspect of the rural counterattack of the early 1900s.
A. Palmer raids B. Prohibition movement C. Red Scare D. Ku Klux Klan

5. Passed in 1935, Roosevelt’s most significant reform measure was the
A. Fair Labor Standards Act.
B. Social Security Act.
C. National Labor Relations Board.
D. Wagner Act.

6. In the election of 1912, Teddy Roosevelt’s Bull Moose Party platform was built around what he called the
A. New Nationalism. B. Fair Deal. C. New Freedom. D. Square Deal

7. In 1893, the Cleveland administration’s repeal of the Sherman Silver Purchase Act
A. empowered conservative Democrats.
B. had no long-term possibility of reviving the depressed economy.
C. brought immediate relief to people suffering under the 1893 depression.
D. caused the value of currency to contract

8. Believing that truth is what works for actual real people, Harvard psychologist William James developed the philosophy of
A. radical progressivism. B. social idealism. C. pragmatism. D. social progressivism

9.As passed by the Congress after McKinley delivered his war message to Congress, the declaration of war against Spain was modified by the Teller Amendment, which stipulated that A. the United States wouldn’t annex Cuba. B. Spain must abandon all claims to territories in the Western Hemisphere. C. trade with Spain would continue as usual. D. the United States reserved the right to annex Cuba.

10.After the Spanish-American War, the __ reserved the right of the United States to intervene in Cuba’s internal affairs.
A. Open Door policy B. Foraker Act C. Caribbean Accord D. Platt Amendment

11.During the election of 1936, declaring their party a “millionaire’s union,” Franklin Roosevelt focused mainly on defeating the
A. Liberty League running Father Coughlin. B. Liberty League running Alfred M. Landon.
C. Union Party running William Lemke. D. Union Party running Gerald K. Smith

12. Which of the following was true of Secretary of State William Henry Seward?
A. He annexed the Midway Islands.
B. He was successful in negotiating a trade deal with the Kingdom of Hawaii.
C. He negotiated the purchase of Alaska from Canada.
D. He opposed American imperial expansion

13. In a famous speech, William Jennings Bryan
A. declared his staunch support of the gold standard.
B. refused his nomination as the presidential candidate of the Populist Party.
C. refused to be allied with the so-called “silverists.”
D. declared that mankind shouldn’t be “crucified on a cross of gold.”

14.In 1916, Woodrow Wilson ordered General John J. Pershing to lead U.S. troops into Mexico to capture
A. Porfirio Diaz. B. Pancho Villa. C. Francisco Madero. D. Victoriana Huerta

15.Among the legislative acts passed during Franklin Roosevelt’s first term as president, which one gave relief to artists, actors, and writers?
A. Works Progress Administration
B. Civilian Conservation Corps
C. Tennessee Valley Authority
D. National Recovery Administration

16.Theodore Roosevelt’s first major trust-busting victory resulted from a suit brought against
A. Standard Oil. B. the American Tobacco Company. C. the DuPont Corporation.
D. the Northern Securities Company

17. The last of Wilson’s Fourteen Points called for
A. the creation of a League of Nations. B. the establishment of an independent Poland.
C. Belgian neutrality. D. heavy reparations to be assessed against Germany.

18.Following the Spanish-American War, and especially in regard to American occupation of the Philippines, most anti-imperialists argued that
A. installing tyranny abroad would encourage tyranny at home.
B. because all war was immoral, the fruits of war were tainted.
C. the occupation would lead to unhealthy racial mixing.
D. cheap, imported Filipino laborers would take American jobs

19. With the vital assistance of __, Theodore Roosevelt established the first comprehensive national conservation policy. A. Upton Sinclair B. Gifford Pinchot C. Samuel Hopkins Adams D. William Howard Taft

20. Which of the following is true of the Hay-Bunau-Varilla Treaty?

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Question 1 The time required to travel downtown at 10 a.m. on Monday morning is known to be normally distributed with a mean of 40 minutes and a standard deviation of 5 minutes. What is the probability that it will take less than 40 minutes? (Points: 2) 0.50 0.20 0.80 1.00 Question 12.12. At a university with 1,000 business majors, there are 200 business students enrolled in an introductory statistics course. Of these 200, 50 are also enrolled in an introductory accounting course. There are an additional 250 business students enrolled in accounting but not enrolled in statistics. If a business student is selected at random, what is the probability that the student is not enrolled in statistics? (Points : 2) 0.05 0.20 0.25 0.80 Question 13.13. Suppose that when the temperature is between 35 and 50 degrees, it has historically rained 40% of the time. Also, historically, the month of April has had a temperature between 35 and 50 degrees on 25 days. You have scheduled a golf tournament for April 12. What is the probability that players will experience rain and a temperature between 35 and 50 degrees? (Points : 2) 0.333 0.400 0.833 1.000 Question 14.14. Data for a particular subdivision near downtown Houston indicate that the average price per square foot for a home is $100 with a standard deviation of $5 (normally distributed). What is the probability that the average price per square foot for a home is greater than $90? (Points : 2) 0 0.023 0.159 0.977 Question 15.15. The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses more than 350 minutes? (Points : 2) 0.001 0.999 0.618 0.382 Question 16.16. The number of phone calls coming into a switchboard in the next five minutes will either be 0, 1, or 2. The probabilities are the same for each of these (1/3). If X is the number of calls arriving in a five-minute time period, what is the mean of X? (Points : 2) 1/3 2/3 1 4/3 Question 17.17. Find the confidence interval for a population mean of 1.6 pounds at a 95% level of confidence with a sample size of 112 and standard deviation of 0.2 pounds. (Points : 2) 1.89 to 1.90 pounds 4.52 to 42.52 pounds 1.56 to 1.64 pounds 1.72 to 2.08 pounds Question 18.18. Peak Previously Played Picks buys and sells used sports equipment. For the past year, the mean purchase of used sports equipment was $36 with a standard deviation of $8. Using the Microsoft Excel function NORM.DIST, find the probability that the next person who comes in to sell used equipment will be paid between $20 and $40. (Points : 2) 66.87% 71.42% 33.13% 28.58% Question 19.19. A sampling plan ________. (Points : 2) states the design quality for production managers describes the characteristics of a population is used when the product or process is not well understood describes the approach that will be used to obtain samples from a population Question 20.20. As the confidence interval becomes wider, the likelihood that the population mean ________. (Points : 2) will be contained in that interval decreases will be in that interval is unchanged will be contained in that interval increases will be in the interval becomes irrelevant
Question 21.21. For a sample size of 172, the degrees of freedom are ________. (Points : 2) 172 171 13.11 173 Question 22.22. The α used to calculate a confidence interval can be understood as ________. (Points : 2) the probability that the population mean will not fall in the confidence interval the difference between the population parameter and the sample statistic the confidence that the population mean is known the likelihood that the population mean was properly calculated Question 23.23. Peak Previously Played Picks buys and sells used sports equipment. For the past year, the mean purchase of used sports equipment was $36 with a standard deviation of $8. Find the probability that the mean purchase from a sample of 16 customers will be less than $20. Use the
Microsoft Excel function NORM.DIST. (Points : 2) 0.00% 100.0% 2.28% 69.13% Question 24.24. A finite population correction factor should be used to adjust the margin of error when the sample taken is larger than ________ of the entire population. (Points : 2) 10% 1% 5% 50% Question 25.25. Which of the following is not an appropriate alternative hypothesis for the null hypothesis, H0: mean production cost = $2.00? (Points : 2) H1: mean production cost > $2.00 H1: mean production costs < $2.00 H1: mean production costs = $2.00 H1: mean production costs ? $2.00 Question 26.26. When conducting two-sample tests for means with independent samples, ________. (Points : 2) it is always assumed that the population variances are equal the test for equality of variances is conducted,
and if the variances are not equal the t-test in Excel should not be used the test for equality of variances is conducted to determine if the variances are equal and thereby choose the appropriate t-test in Excel it is always assumed that the population variances are unequal Question 27.27. Another term for p-value is ________. (Points : 2) degrees of freedom random effect probability density function observed significance level Question 28.28. Use the below information to answer the following five questions. A company wishes to test whether the proportion of female managers is the same as the proportion of male managers. The following table provides data for a sample of employees. Females Males Number of managers 18 23 Sample size 45 75 Which of the following is the conclusion?
(Points : 2) We reject H0 that the proportion of female managers is the same as the proportion of male managers. We should not reject H0 that the proportion of female managers is not the same as the proportion of male managers. We reject H0 that the proportion of female managers is not the same as the proportion of male managers. We should not reject H0 that the proportion of female managers is the same as the proportion of male managers. Question 29.29. The confidence coefficient is ________. (Points : 2) the probability of correctly failing to reject the null hypothesis the probability of making a Type II error the probability of making a Type I error the probability of correctly rejecting the null hypothesis Question 30.30. If the confidence coefficient is 0.9, ________.
(Points : 2) we expect that 9 samples out of 100 will support the null hypothesis we expect that 90 out of 100 samples will support the null hypothesis we expect that 10 samples out of 100 will support the null hypothesis we expect that all 100 samples will support the null hypothesis