Given that a respondent is over age 50 what is the, Ask an Expert

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Where people turn for news is different for various age groups. Suppose that a study conducted on this issue was based on 200 respondents who were between ages 36 and 50 and 200 respondents who were over age 50. Of the 200 respondents who were between ages 36 and 50, 82 got their news primarily from newspapers. Of the 200 respondents who were over age 50, 104 got their news primarily from newspapers.

a. Given that a respondent is over age 50, what is the probability that he or she gets news primarily from newspapers?

b. Given that a respondent gets news primarily from newspapers, what is the probability that he or she over age 50?

c. Explain the difference in the results in (a) and (b).

d. Are the two events whether the respondent is over age 50 and whether he or she gets news primarily from newspapers independent?

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Statistics and Probability, Statistics

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