have 95% confidence that her estimate of the mean value is correct to within $95. On the basis of past experience, she estimates that spring, and frame) in stock. An auditor for the store wants to estimate the mean value of the beds in stock at that time. She wants to and frame furnishings store that sells bathroom furniture is conducting an end-of-month inventory of the beds (mattress, bed 3). the standard deviation of the value of a bed is $150. a) How many beds should she select? b) Using the sample size selected in (a), an audit was conducted, with the following results: X $1.654.27 S-$184.62. Construct a 99 % CIE for population Mean C.LE. Formula Graph Critical Values