As part of an annual review of its accounts, a discount brokerage selects a random
Chapter 0, Problem 64(choose chapter or problem)
As part of an annual review of its accounts, a discount brokerage selects a random sample of 36 customers. Their accounts are reviewed for total account valuation, which showed a mean of $32,000, with a sample standard deviation of $8,200. What is a 90 percent confidence interval for the mean account valuation of the population of customers?
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