Examine the following data. Assume the variances for the two populations are 22.74 and 26.65, respectively. a.
Question:
Examine the following data. Assume the variances for the two populations are 22.74 and 26.65, respectively.
a. Use the data to test the following hypotheses (α = .02).
H0: µ1 - µ2 = 0Ha: µ1 - µ2 ≠ 0
b. Construct a 98% confidence interval to estimate the difference in population means using these data. How does your result validate the decision you reached in part (a)?
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Sample 1 Sample 2 90 88 80 88 83 94 78 85 82 81 75 76 88 87 91 81 83 88 90 80 76 83 88 77 81 84 84 87 87 93 77 75 79 86 90 75 88 90 91 88 84 83 82 83 88 80 80 74 89 95 97 95 93 97 80 90 74 89 84 79
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a Sample 1 Sample 2 x 1 8823 x 2 812 1 2 2274 2 2 2665 n 1 30 n 2 30 H o 1 2 0 H a 1 ...View the full answer
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Related Book For
Business Statistics For Contemporary Decision Making
ISBN: 978-1118749647
8th edition
Authors: Black Ken
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