Answer to Question #337631 in Statistics and Probability for Shey

Question

1. the last several years, the use of cellphones has increased dramatically. An article in USA Today reported that according to a poll, the mean talking time per month for cellphones was 372 minutes for men and 275 for women, while the mean talking time per month for traditional home phones was 334 minutes for men and 510 minutes for women. Suppose that the poll was based on a sample Over of 100 men and 100 women, and that the standard deviation of the talking time per month for cellphones was 120 minutes for men and 100 minutes for women, while the standard deviation of the talking time per month for traditional home phone was 100 minutes for men and 150 minutes for women. (critical value = +1.96)

a. Is there evidence of a difference in the mean monthly talking time on cellphones for men and women?

b. Is there evidence of a difference in the mean talking time on traditional home phone for men and women?

Answer 1

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