1.Market researchers were comparing the true proportion of Lifetime Movie Club subscribers who prefer the originalStalked by My Doctormovie vs the follow-up sequel,Stalked by My Doctor: The Return. They obtained the 80% confidence interval below.

0.18 < p1 - p2 < 0.26

Which is the best choice for the margin of error?

a.0.02

b.0.08

c.0.22

d.0.20

e.0.04

2.Country music sensation Whiskey Horse Boots historically sells out 92.7% of their arena shows. Assuming the appropriate probability modeling requirements are met, compute the probability they sell out exactly two of the remaining four shows.

A.0.027

B.0.309

C.0.185

D.0.233

E.0.146

3.The time it takes to be seated for a party of five at Hookah Joe's on a Friday night is normally distributed with a mean of 12.3 minutes and a standard deviation of 3.2 minutes. What is the probability it takes at least 15 minutes to be seated?

A.0.8438

B.0.2005

C.0.7005

D.0.2995

4.Rumor has it that the mean salary of dog catchers in Idaho is 49.8 years. If a hypothesis test is performed, and thep-value is not smaller than alpha, how should you interpret the decision?

A.There is not sufficient evidence to reject the claim = 49.8.

B.There is sufficient evidence to support the claim = 49.8.

C.There is not sufficient evidence to support the claim = 49.8.

D.There is sufficient evidence to reject the claim = 49.8.

5.In the 2012 studyAge at Onset Versus Family History and Clinical Outcomes in 1,665 International Bipolar-I Disorder Patients, Harvard researchers indicated that "age of onset" was approximately normal with a mean of 23 years and a standard deviation of 11 years. For the 1,665 patients in the study, how many would you approximate were at least 18 years of age for their onset of bipolar-I disorder? Select the single best choice.

a.289

b.1207

c.1122

d.543

6.Suppose we have a two-tailed hypothesis test about conducted at = 0.05. If the sample size is n = 3, what is the correct rejection region?

a.z < -1.960 or z > 1.960

b.t > -2.920

c.t < 2.920

d.t < -4.303 or t > 4.303

7.The BAC levels for a bunch of amateur stage magicians were measured. The same thing for professional magicians! Both distributions are shown below. Which of the following best describes the relationship between center and spread for the two groups of magicians?

A.Amateur > Professional&Amateur < Professional

B.Amateur < Professional&Amateur > Professional

C.Amateur > Professional&Amateur > Professional

D.Amateur < Professional&Amateur < Professional

8.A group of 36 randomly selected Eminem fans has a mean age of 13 years and a standard deviation of 3 years. Which of the following is the correct 95% confidence interval and conclusion?

A.We are 95% confident the true mean age of all Eminem fans is between 11.71 years and 14.29 years.

B.We are 95% confident the true mean age of all Eminem fans is between 12.02 years and 13.97 years.

C.We are 95% confident the sample mean age of Eminem fans is between 12.18 years and 13.82 years.

D.We are 95% confident the sample mean age of Eminem fans is between 12.38 years and 13.47 years.

9.In a lab experiment with highly compensated volunteers, a random sample of 10 UF students (population 1) and a random sample of 10 USF students (population 2) were tested by Dr. Psycho Stevens to determine the time it took each to start crying after being stung by the RIFA (red imported fire ant). If Dr. Psycho Stevens wanted to test the hypothesis that USF took longer, which set of hypotheses would they use? From the answer choices provided, select the best one.

A.H0: 1-2 0 vs. Ha: 1-2 = 0

B.H0: 1-2 = 0 vs. Ha: 1-2 0

C.H0: 1-2 = 0 vs. Ha: 1-2 < 0

D.H0: 1-2 = 0 vs. Ha: 1-2 > 0

10.The body weight of adult Greyhounds (Danny's mom's favorite dog) are mound-shaped and symmetric with a mean of 72 pounds and a standard deviation of 12 pounds. What percentage of these dogs weigh more than 36 pounds but less than 60 pounds?

A.At least 25%

B.Approximately 2.5%

C.Approximately 16%

D.At most 25%