a. Use the following data and = .10 to test the stated hypotheses. Assume x is

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a. Use the following data and α = .10 to test the stated hypotheses. Assume x is normally distributed in the populations and the variances of the populations are approximately equal.

H0: µ1 - µ2 = 0 ....... Ha: µ1 - µ2 ≠ 0

Sample 1 ...Sample 2

n1 = 20 .... n2 = 20

x̄1 = 118 ..... x̄2 = 113

s21 = 23.9 ....s22 = 21.6

b. Use these data to construct a 90% confidence interval to estimate µ1 - µ2.

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Business Statistics For Contemporary Decision Making

ISBN: 978-1118749647

8th edition

Authors: Black Ken

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Question Posted: Feb 19, 2015 09:02 AM

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a. Use the following data and = .10 to test the stated hypotheses. Assume x is

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a H o 1 2 0 10 H a 1 2 0 df 20 20 2 38 Sample 1 Sample 2 n 1 20 n 2 20 x 1 118 x 2 113 s ...View the full answer

Business Statistics For Contemporary Decision Making

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