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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)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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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. S1 = 4.3, S2 City A: n = 10, X10 = 148.5, %3D City B: n = 10, Y 10 = 144.2, = 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 is [0.296, 5.54]. We assumed that the weekly sales are normally distributed. (c) The confidence interval for is [0.24, 6.85]. We assumed that the weekly sales are normally distributed. (d) The confidence interval for 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)
Transcribed Image Text: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. S1 = 4.3, S2 City A: n = 10, X10 = 148.5, %3D City B: n = 10, Y 10 = 144.2, = 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 is [0.296, 5.54]. We assumed that the weekly sales are normally distributed. (c) The confidence interval for is [0.24, 6.85]. We assumed that the weekly sales are normally distributed. (d) The confidence interval for 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)
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