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Management Studies

The article "Students Increasingly Turn to Credit Cards" (San Luis Obispo Tribune, July 21, 2006)reported that 37% of college freshmen and 48% of col- lege seniors carry a credit card balance from month to month. Suppose that the reported percentages were based on random samples of 1000 college freshmen and 1000 college seniors.

a. Construct a 90% confidence interval for the propor- tion of college freshmen who carry a credit card bal- ance from month to month.

b. Construct a 90% confidence interval for the propor- tion of college seniors who carry a credit card bal- ance from month to month.

c. Explain why the two 90% confidence intervals from Parts (a) and (b) are not the same width.

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Business Management, Management Studies

Category:- Business Management
Reference No.:- M91726113

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