As part of annual review of its accounts, a discount brokerage selects a random sample of 27 customers. Their accounts are reviewed for total account valuation, which showed a mean of $36,200, with a sample standard deviation of $8,400.
What is a 95 percent confidence interval for the mean account valuation of the population of customers? (Round your answers to the nearest dollar amount. Omit the "tiny_mce_markerquot; sign in your response.)
95 percent confidence interval for the mean account valuation is between $ and $.