Required information Problem 5-68 (Static) Cost Estimation: Simple and Multiple Regression Using a Spreadsheet (Appendix A) (LO 5-4, 5, 6, 9) [The following information applies to the questions displayed below.] Davis Stores sells clothing in 15 stores located around the southwestern United States. The managers at Davis are considering expanding by opening new stores and are interested in estimating costs in potential new locations. They believe that costs are driven in large part by store volume measured by revenue. During a discussion, one of the managers suggests that number of employees might be better at explaining cost than store revenues. As a result of that suggestion, managers collected the following information from last year's operations (revenues and costs in thousands of dollars): Store Costs Employees Revenues 101$ 4,214 102 2,894 103 5,181 3,998 3,676 104 105 106 3,319 107 5,029 108 2,374 109 4,688 110 2,959 4,179 3, 200 2,556 4,655 2,986 111 112 113 114 115 39$ 29 47 38 33 38 54 26 44 35 37 41 35 42 28 Problem 5-68 (Static) Part e 4,100 2,227 5,738 3,982 2,914 4,023 6,894 1,779 5,416 3,228 3,886 4,690 3,552 4,817 2,124 e-1. Enter the regression coefficients. e-2. Estimate the cost of a store with revenues of $2.5 million and 30 employees using the results of a multiple regression of store costs on store revenues and employees.

Give one method to increase statistical power and Which test statistic should you use if you are comparing two variances?

USA Today reported that about 20% of all people In the United States are Illiterate. Suppose you take eleven people at random off a city street. P USE SALT (a) Make a histogram showing the probability distribution of the number of illiterate people out of the eleven people in the sample. 0.30 0.30 0.25 0.25 0.20 0.20 0.15 0.15 0.10 0.10 0.05 0.05 2 3 4 5 7. 8 9 10 11 0 1 2 3 4 5 6 78 9 10 11 0.30 0.30 0.25 0.25 0.20 0.20 0.15 0.15 0.10 0.10 0.05 0.05 0. 0 1 2 3 4 5 6 7 8 9 10 11 0 1 2 3 45 6 7 8 9 10 11 (b) Find the mean and standard deviation of this probability distribution. (Round your standard deviation to two decimal places.) people people Find the expected number of people in this sample who are illiterate. people

62° А 12.76 21.19 24.18 51.12 24