Exercise 9-64 (Algo) (L09-2) As part of an annual review of its accounts, a discount brokerage selected a random sample of 26 customers and reviewed the value of their accounts. The mean was $42,300, with a sample standard deviation of $8,750. (Use Distribution Table.) What is a 90% confidence interval to estimate the mean account value of the population of customers? (Round your answers to the nearest dollar amount.) 90 cand non interval for the mean account valuation between ang Computer conversion costs given the following deta: dired materials, $365,200; direct labor, 5196,600; factory overhead, 5221,400 end selling expenses, $43,100. Oo. 418.000 OD. 783,200 Oc. 5586.600 Od $178,300