A sample of households in a community is selected from the telephone directory. In this community, 4% of households have no telephone, 10% have only cell phones, and another 25% have unlisted phone numbers. The above sampling strategy will certainly suffer from what bias? O a. nonresponse b. response Oc. undercoverage d. oversaturation

A sports franchise knows that 81% of their season ticket holders attend every home game.  The collect a random sample of size 250 from among last year's season ticket holders.  How likely are they to find that 200 or fewer attended every home game?   a. .657   b. .800   c. .343   d. .500

A survey asks the question, “With the recent recalls on their cars, would you consider buying a Volkswagon?” The most likely type of bias is:A.sampling B.measurement C.non-response D.response

Which one of the sampling methods listed in the response options is used in the scenario below? A university researcher is interested in studying newly admitted community college transfer students. She begins by dividing the students into two subpopulations: US citizens and international students. The researcher then randomly samples from each separate subpopulation to ensure that the final combined sample represents the same percentage of US citizens and international students seen in the general community college transfer population.   A. Cluster B. Convenience C. Stratified D. Systematic

A poll was taken of 12,729 working adults aged 40-70 to determine their level of education. The participants were classified by sex and by level of education. The results are shown below. Education Level Male Female Total High School or Less 3577 2472 6049 Bachelor's Degree 3037 2585 5622 Master's Degree 480 464 944 Ph.D. 66 48 114 Total 7160 5569 12,729 A person is selected at random. Compute the following probabilities. b) What is the probability that the selected person does not have a Master's degree, given that he is male?  What is the probability that the selected person has a Ph.D., given that she is female?

A study was done to determine whether morning exerciseimproved grades among all students at a community college. The softball coach in charge of the study handed out a survey to hergirls’softballteam in order to gather the data. Each student was asked to record two things:(1) how much exercise they did in the morning before class, and (2) their current grade point average. a.Identify the sampling method. b.Identify what bias is present in the survey. c.Determine whether the study is an experiment or an observational study d.Identify a major problem with the study.