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As part of an annual review of its accounts, a discount brokerage selects a random sample...

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Basic Math

As part of an annual review of its accounts, a discountbrokerage selects a random sample of 27 customers. Their accountsare reviewed for total account valuation, which showed a mean of$32,500, with a sample standard deviation of $8,600. (Use tDistribution Table.)

What is a 95% confidence interval for the mean account valuationof the population of customers? (Round your answers to thenearest dollar amount.)

95% confidence interval for the mean account valuation isbetween $  and $  .

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Solution Given that 32500s 8600n 27Degrees of freedom df n 1 27    See Answer
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