1) It is claimed that 67% of employers perform a background check when evaluating a new job candidate.One particular employment agency questions this claim and decides to gather data from a random sample of employers in order to conduct a hypothesis test.If we divide 67 by 100 to get 0.67, we would call the value of 0.67 a

A.population mean.

B.sample proportion.

C.p-value.

D.significance level.

E.population proportion.

2)Has the "check engine" light ever come on in your car?If so, how many days do you continue driving your car until you get your engine checked?According to a large automobile manufacturer, the typical car owner drives for an average of 9 days after the "check engine" light comes on before taking their vehicle in for servicing.Joey is a mechanic, and, based on his experiences, he thinks this claimed average is too low.He is able to survey a random sample of 50 customers who brought their cars in for servicing after the "check engine" light came on, and he finds that the sample mean number of days the light had been on for these customers was 10.7 days, with a sample standard deviation of 4.5 days.If a hypothesis test is conducted, what will thep-value be?

A.Between 0.01 and 0.05

B.Between 0.05 and 0.10

C.Less than 0.01

D.Larger than 0.10

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

3) It is claimed that 70% of college students who have Facebook accounts log on to these accounts at least six times each day.Believing this claimed value is too high, Rachel surveys a random sample of 200 college students who have Facebook accounts and finds that 65% of these students log onto their Facebook accounts at least six times a day.If Rachel wants to conduct a hypothesis test, what will her test statistic be?Choose the answer below that is closest to what you calculate, and try not to round until you get to the very end of your calculations.

A.-2.7

B.-1.5

C.-0.1

D.-3.4

E.-0.5

4) Suppose it is claimed that the proportion of OSU students who belong to a fraternity or a sorority is 0.15.A college administrator has some reason to question this claim, and she gathers data from a random sample of 100 students in order to test H_o:p= 0.15 against H_a:p 0.15.If the resulting test statistic is 0.4, what will thep-value be?

A.0.6892

B.0.3446

C.0.6554

D.0.8159

E.1.3108

5) According to a recent report, 56% of adult consumers pay all of their bills online.Monica believes this claim is inaccurate.She is able to survey a random sample of 350 adult consumers about their bill-paying habits, and she observes that 217 of the adults in her sample pay all of their bills online.Based on this information, what would the sample proportion be?

A.0.56

B.0.22

C.0.18

D.0.62

E.0.35

6) It is widely reported that high school seniors spend an average of 10 hours per week working at part-time jobs.Ms. Gonzalez, a high school principal, thinks the senior students at her high school actually spend a different amount than 10 hours per week working at part-time jobs.She surveys a random sample of seniors and uses the resulting data from the sample to conduct a hypothesis test.Based on the results of the hypothesis test, Ms. Gonzalez states that there is a 6% chance she would have obtained results at least as extreme as what she obtained if the null hypothesis is really true.From this information, what should we conclude?

A.The null hypothesis would be rejected if the significance level were set at 0.01.

B.The null hypothesis would be rejected if the significance level were set at 0.05.

C.The null hypothesis would be rejected if the significance level were set at 0.10.

D.The null hypothesis would not be rejected at significance levels of 0.01, 0.05, or 0.10.

E.Students in this particular sample must have worked less than an average of 10 hours per week at their part-time jobs.

7) Imagine you have data in the form of means and you conduct a hypothesis test.Assuming you have made no errors in your calculations, what should we conclude if the test statistic ends up being positive?

A.The sample size must be large.

B.The sample standard deviation must be small.

C.The sample standard deviation must be large.

D.The claimed population mean is smaller than (or less than) the sample mean.

E.The claimed population mean is larger than (or greater than) the sample mean.

8) If we say the results of a hypothesis test are________________________, this means they are unlikely to occur just by chance alone; if we say the results of a hypothesis test are ____________________, this means they have important implications.

A.practically significant; statistically significant

B.statistically significant; practically significant

C.critical; useful

D.replicable; dependable

E.credible; significant

9) According to a recent report by a credit organization, the average amount of credit card debt that college students have is $906.A bank manager believes this claimed value is too high.In her own survey of a random sample of 500 college students, she finds the average amount of credit card debt to be $825.The bank manager writes her null and alternative hypotheses as follows:

H_o:= $825

H_a:< $825

What is wrong with these hypotheses?

A.Both the null and alternative hypotheses should have apsymbol instead of asymbol.

B.The value of "$825" in both hypotheses should be replaced with the value of "$906."

C.The null hypothesis is correct, but the alternative hypothesis should have the value of "$906" instead of the value of "$825."

D.The alternative hypothesis is correct, but the null hypothesis should have the value of "$906" instead of the value of "$825."

E.Nothing is wrong.

10) A hypothesis test is performed in order to determine if the proportion of OSU students who work out at the RPAC on a weekly basis is different from 0.50.In other words, researchers tested the null hypothesis of H_o:p= 0.50 against the alternative hypothesis of H_a:p 0.50.A random sample of 1000 OSU students is surveyed, and the resulting hypothesis test yields ap-value of 0.0214.If we assume a significance level of 0.05, what conclusion should we draw?

A.Because 0.0214 < 0.05, we should conclude that the proportion of OSU students who work out at the RPAC on a weekly basis is not significantly different from 0.50.

B.Because 0.0214 > 0.05, we should conclude that the proportion of OSU students who work out at the RPAC on a weekly basis is not significantly different from 0.50.

C.Because 0.0214 < 0.05, we should conclude that the proportion of OSU students who work out at the RPAC on a weekly basis is significantly different from 0.50.

D.Because 0.0214 > 0.05, we should conclude that the proportion of OSU students who work out at the RPAC on a weekly basis is significantly different from 0.50.

E.Because 0.0214 < 0.05, we should conclude that the proportion of OSU students who work out at the RPAC on a weekly basis is significantly greater than 0.50.