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Starting in 1998 a series of credit card usage studies have been performed by Sallie Mae, a major provider of educational loans and savings programs In a recent pilot study a random pool of

Starting in 1998, a series of credit card usage studies have been performed by Sallie Mae, a major provider of educational loans and savings programs. In a recent pilot study, a random pool of 122 loan applicants attending four-year colleges had their credit card data pulled for analysis. The sample mean credit card balance was $3173. The standard deviation was $3216.

(a) Compute a 95% confidence interval for the mean credit card balance among all undergraduate loan applicants (studying at four-year colleges).

Apr 03 2020 View more View Less

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