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Where people turn to for news is different for various age groups. Suppose that

ID: 2922578 • Letter: W

Question

Where people turn to for news is different for various age groups. Suppose that a study conducted on this issue was based on 200 respondents who were between the ages of 36 and 50 and 200 respondents who were over age 50. Of the 200 respondents who were between the ages of 36 and 50, 91 got their news primarily from newspapers. Of the 200 respondents who were over age 50, 103 got their news primarily from newspapers. Complete parts (a) through (d) a. Given that a respondent is over age 50, what then is the probability that he or she gets news primarily from newspapers? (Round to four decimal places as needed.)

Explanation / Answer

P(gets news primarily from newspapers| respondent is over 50) = P(gets news primarily from newspapers AND is over 50)/P(respondent is over 50) =(103/200) =0.515

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