Credit-Card Debt A school administrator is concerned about the amount of credit-card
Chapter 9, Problem 36(choose chapter or problem)
Credit-Card Debt A school administrator is concerned about the amount of credit-card debt that college students have. She wishes to conduct a poll to estimate the percentage of fulltime college students who have credit-card debt of $2000 or more. What size sample should be obtained if she wishes the estimate to be within 2.5 percentage points with 94% confidence if (a) a pilot study indicates that the percentage is 34%? (b) no prior estimates are used?
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