Suppose two independent random samples of sizes n1 = 9 and n2 = l6 that have been

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Suppose two independent random samples of sizes n1 = 9 and n2 = l6 that have been taken from two normally distributed populations having variances σ21 and σ21 give sample variances of s21 = 100 and s22 = 20.
a. Test H0: σ21 = σ22 versus Ha: σ21 + σ22 with a = .05. What do you conclude?
b. Test H0": σ21 < σ22 versus Ha: σ21 > σ22 with a = .05. What do you conclude?
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Business Statistics In Practice

ISBN: 9780073401836

6th Edition

Authors: Bruce Bowerman, Richard O'Connell

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