chapter_02 - CHAPTER 2 SOLUTIONS AND MINI-PROJECT NOTES...

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CHAPTER 2 SOLUTIONS AND MINI-PROJECT NOTES CHAPTER 2 READING THE NEWS EXERCISE SOLUTIONS 2.1 First, they would not reach all "daytime viewers"; they would reach only those who were watching the show already, surely a biased sample with regard to the show. Second, those who bothered to call would not even be representative of those who were watching the show. People who want the show to remain on the air would be most likely to call. 2.2 Results could be extended to the dogs of owners who would respond to a similar ad in the newspaper. Notice that this is not necessarily the same as all dogs, since there may be a level of concern in these owners that is not present in all owners. Thus, their dogs may be treated differently in other ways. 2.3 a. Having the prison guards themselves asking the prisoners would surely bias the results. Hiring outside interviewers would be best. b. A biased version would be something like "You don't have any complaints about how you are treated, do you?" while an unbiased version would be something like "We are interested in your opinion about your treatment by the guards. Do you think you are treated fairly or unfairly by them?" 2.4 a. People who would prefer to answer that they don't know, but are forced to choose an answer, will use something other than an informed opinion to do so. For example, if a question were to ask "Do you support the new tax bill in Congress?" and people who were unfamiliar with the bill were forced to answer, their answers would probably be more of a reflection of how they feel about taxes or about the current Congress. b. The lack of "don't know" as a possible response would be uncovered by Component 4, "the exact . .. questions asked." 2.5 Grade point average and major. 2.6
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This note was uploaded on 10/15/2011 for the course STAT 100 at Pennsylvania State University, University Park.

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chapter_02 - CHAPTER 2 SOLUTIONS AND MINI-PROJECT NOTES...

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