A paint company has large outlet stores in two cities. Ten samples of the weekly sales (in tons) for the two cities are as follows. X10 = 148.5, Y 10 = 144.2, City A: n = 10, Sj = 4.3, City B: n = 10, S2 = 3.8. Obtain a 98 percent confidence interval for the ratio of the two population standard deviations. Justify any assumption that you may be making. The following `answers" have been proposed. (a) The confidence interval for is [0.296, 5.54]. No further assumptions are needed. (b) The confidence interval for 4 is [0.296, 5.54]. We assumed that the weekly sales are normally distributed. (c) The confidence interval for A is [0.24, 6.85]. We assumed that the weekly sales are normally distributed. (d) The confidence interval for 4 is [0.24, 6.85]. We assumed that the weekly sales are normally distributed and the means of the two populations are equal. e) None of the above. The correct answer is (a) (b) (c) (d) (e) N/A (Select One)
A paint company has large outlet stores in two cities. Ten samples of the weekly sales (in tons) for the two cities are as follows. X10 = 148.5, Y 10 = 144.2, City A: n = 10, Sj = 4.3, City B: n = 10, S2 = 3.8. Obtain a 98 percent confidence interval for the ratio of the two population standard deviations. Justify any assumption that you may be making. The following `answers" have been proposed. (a) The confidence interval for is [0.296, 5.54]. No further assumptions are needed. (b) The confidence interval for 4 is [0.296, 5.54]. We assumed that the weekly sales are normally distributed. (c) The confidence interval for A is [0.24, 6.85]. We assumed that the weekly sales are normally distributed. (d) The confidence interval for 4 is [0.24, 6.85]. We assumed that the weekly sales are normally distributed and the means of the two populations are equal. e) None of the above. The correct answer is (a) (b) (c) (d) (e) N/A (Select One)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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