1. Do you check your phone or use technology right before you go to bed? If so, chances are that you are not alone. A recent news report claims that 60% of adults use some kind of technology right before they go to bed at night. Believing that this claimed value is too low, a researcher surveys a random sample of 200 adults and finds that 71% use some kind of right before they go to bed. If a hypothesis test is conducted in order to test the claim that Ho: p = 0.60, what will the p-value be?

A. Less than 0.01

B. Larger than 0.10

C. Between 0.01 and 0.05

D. Between 0.05 and 0.10

E. There is not enough information available in the problem to determine the p-value.

2. A claim is made that Netflix customers watch an average of 10 hours of Netflix programming during a typical week. A marketing firm questions this claim. They survey a random sample of 120 Netflix customers and find these customers watch an average of 12 hours of Netflix programming during a typical week, with a sample standard deviation of 8.4 hours. Based on this information, what will the test statistic be? Choose the answer below that is closest to what you calculate, and don't do alot of rounding until you get to the very end of your calculations.

A. Smaller than 1

B. 1.2

C. 2.6

D. 3.7

E. Larger than 5

3. Which of the following statements is false?

A. A small p-value can lead to a result that is statistically significant but not practically important.

B. We say a result is practically significant if the result would be unlikely to occur just by chance alone if we assume the null hypothesis is true.

C. It is not necessary to know the alpha (or significance) level in order to compute the p-value.

D. A p-value is a probability.

E. None of the above answer choices are false.

4. Are people waiting until they are older to get married? According to a recent report, 38% of adults wait until they are 30 years of age or older to get married for the first time. A sociologist questions this claim. She surveys a random sample of 586 married adults and learns that 26% of the individuals in the sample waited until they were 30 years of age or older to get married. What would the sample proportion be?

A. 0.04

B. 0.17

C. 0.26

D. 0.38

E. 0.59

5. A hypothesis test is conducted and the p-value ends up being 0.02. What will the conclusions be at alpha (or significance) levels of 0.10, 0.05, and 0.01?

A. We will reject Ho if the alpha level is 0.01, but not if the alpha level is 0.05 or 0.10.

B. We will reject Ho if the alpha level is 0.05, but not if the alpha level is 0.10 or 0.01.

C. We will reject Ho if the alpha level is either 0.10 or 0.05, but not if the alpha level is 0.01.

D. We will reject Ho if the alpha level is 0.10, 0.05, or 0.01.

E. We will fail to reject Ho if the alpha level is 0.10, 0.05, or 0.01.

6. According to the National Bakery Association, the average cost of a wedding cake is $500. Some wedding planners doubt this claim, however, and insist that couples usually spend much more than $500 on their wedding cake. If data is gathered in order to test the hypotheses Ho: = $500 vs. Ha: > $500, what would symbolize?

A. The sample proportion

B. The population proportion

C. The p-value

D. The sample mean

E. The population mean

7. Imagine you have data in the form of proportions and you conduct a hypothesis test. Assuming you have made no errors in your calculations, what would it mean if the test statistic ends up being negative?

A. The sample proportion is smaller than (or less than) the claimed population proportion.

B. The sample proportion is larger than (or greater than) the claimed population proportion.

C. The sample proportion is equal to the claimed population proportion.

D. The sample size must be very small.

E. The sample size must be very large.

8. A claim is made that 35% of adults listen to classical music on a regular basis. You believe this claim is incorrect. You would like to test the null hypothesis that ? = 0.35 versus the alternative hypothesis that ? 0.35. You gather data from a survey of a random sample of 475 adults and obtain a test statistic of 1.8. If we assume the significance (or alpha) level is 0.05, what should your decision be?

A. Reject the null hypothesis

B. Fail to reject the null hypothesis

C. Reject the alternative hypothesis

D. Fail to reject the alternative hypothesis

E. We cannot reach a conclusion without knowing the sample proportion.

9. It is widely reported that high school students spend an average of 7 hours per week working on homework. Miss Bonnar, a high school English teacher, questions this report. She believes the students at her high school spend more than 7 hours per week working on homework. She surveys a random sample of 95 students and plans to use the resulting data to conduct a hypothesis test. Suppose the p-value from this hypothesis test is 0.01. Which of the following is a correct interpretation of this p-value?

A. Approximately 1% of the students in the sample spend more than 7 hours per week working on homework.

B. The probability of obtaining a result at least as extreme as the one observed, if the null hypothesis is true, is 0.01.

C. The probability that the null hypothesis is true is 0.01.

D. The probability that the null hypothesis is false is 0.01.

E. If we assume to begin with that the null hypothesis is false, there is only a 1% chance we will reject that null hypothesis.

10. According to a recent report, when it comes to purchasing a new vehicle, 61% of adults go online to shop for their new vehicle. A researcher believes this claimed value is too high. He gathers data in order to test the hypotheses Ho: p = 0.61 vs. Ha: p > 0.61. What is wrong with these hypotheses?

A. Nothing.

B. The hypotheses should be written about sample statistics, not population parameters.

C. The hypotheses should be about means, not proportions.

D. The null hypothesis should have a "less than" sign rather than an "equals" sign.

E. The alternative hypothesis should have a "less than" sign rather than a "greater than" sign.