1.What are the two parts of a confidence statement? A. a nonresponse error and a level of confidence B. a margin of error and a level of confidence C. a sample size and a level of confidence D. a population size and a level of confidence E. a response error and a level of confidence

2.A researcher would like to learn more about how public health workers coped with changes in their workplace due to COVID-19. A survey about workplace perceptions is mailed to a random sample of 137,446 public health workers, but only 44,732 of these workers complete the survey. What kind of error is this? A. A sampling error B. A standard error C. A response error D. A nonresponse error E. A margin of error

3.A survey about drug use is administered to a random sample of college students, but not all students are honest when answering survey questions because they worry they might get into trouble by admitting they have experimented with drugs. What kind of error does this illustrate? A. A sampling error B. A response error C. A nonresponse error D. A standard error E. A margin of error

4.If a sampling method is biased, what should we conclude? A. The sample statistic must be close to the true population parameter. B. A voluntary response sampling method should be used instead of the current sampling method since it will always reduce bias. C. We should sample from a larger population to reduce the bias. D. We should increase the sample size to reduce the bias. E. None of the above answer options are correct.

5.Allan attends a college where the total enrollment is 14,500 students. Beth attends a different college where the total enrollment is also 14,500 students. Allan and Beth each want to select a random sample from their respective colleges in order to estimate the percentage of all students at their college who eat breakfast on a regular basis. Allan selects a random sample of 125 students from his college to survey and Beth selects a random sample of 330 students from her college to survey. Who will have the smaller estimated margin of error? A. Allan and Beth will each end up with the same estimated margin of error since they are sampling from populations that are the same size. B. Allan and Beth will each end up with the same estimated margin of error since they are both trying to estimate the exact same thing. C. Allan will have the smaller estimated margin of error. D. Beth will have the smaller estimated margin of error. E. This question cannot be answered without knowing the resulting sample statistics.

6.Administrators at OSU would like to survey students across all OSU campuses (Columbus, Lima, Mansfield, Marion, Newark, and Wooster) about their perceptions of campus parking resources. Which one of the following describes a way in which a stratified random sample could be obtained? A. Administrators can hold a press conference and ask students from each of the six campuses to call a special number in order to express their views about campus parking. B. An alphabetized list of students from each campus can be obtained, and every 25th student on each list could be surveyed. C. An effort can be made to select a random sample of students from each campus to survey. D. Links to a survey can be shared within the social media accounts for each campus, allowing students to voluntarily respond to the survey. E. All of the above methods would yield a stratified random sample.

7.Consider all individuals who have ever climbed Mt. Everest to be a population. The percentage of left-handed individuals in this population is 8%. We would call the number 8% a A. margin of error. B. census. C. parameter. D. statistic. E. sample.

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