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Туре А Туре В x1 = 75.7 hrs x2 = 64.3 hrs %3D S1 = 4.5 hrs s2 = 5.1 hrs n1 = 11 n2 = 9 Construct a 98% confidence interval for the difference between the mean drying time for paint of type A and the mean drying time for paint of type B.

Туре А Туре В x1 = 75.7 hrs x2 = 64.3 hrs %3D S1 = 4.5 hrs s2 = 5.1 hrs n1 = 11 n2 = 9 Construct a 98% confidence interval for the difference between the mean drying time for paint of type A and the mean drying time for paint of type B.

MATLAB: An Introduction with Applications
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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Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. A paint manufacturer wished to compare the drying times of two different types of paint. Independent simple random samples of 11 cans of type A and 9 cans of type B were selected and applied to similar surfaces. The drying times, in hours, were recorded. The summary statistics are as follows. Туре А Туре В x1 = 75.7 hrs x2 = 64.3 hrs S1 = 4.5 hrs s2 = 5.1 hrs n1 = 11 n2 = 9 %3D %3D Construct a 98% confidence interval for the difference between the mean drying time for paint of type A and the mean drying time for paint of type B.
Transcribed Image Text:Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. A paint manufacturer wished to compare the drying times of two different types of paint. Independent simple random samples of 11 cans of type A and 9 cans of type B were selected and applied to similar surfaces. The drying times, in hours, were recorded. The summary statistics are as follows. Туре А Туре В x1 = 75.7 hrs x2 = 64.3 hrs S1 = 4.5 hrs s2 = 5.1 hrs n1 = 11 n2 = 9 %3D %3D Construct a 98% confidence interval for the difference between the mean drying time for paint of type A and the mean drying time for paint of type B.
Construct a 98% confidence interval for the difference between the mean drying time for paint of type A and the mean drying time for paint of type B. (5.79hrs, 17.01 hrs) O (6.08 hrs, 16.72 hrs) (5.85 hrs, 16.95 hrs) (6.34 hrs, 16.46 hrs)
Transcribed Image Text:Construct a 98% confidence interval for the difference between the mean drying time for paint of type A and the mean drying time for paint of type B. (5.79hrs, 17.01 hrs) O (6.08 hrs, 16.72 hrs) (5.85 hrs, 16.95 hrs) (6.34 hrs, 16.46 hrs)
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