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(Solution) - Two independent random samples of sizes n1 4 and

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Two independent random samples of sizes n1 = 4 and n2 = 5 are selected from each of two normal populations:

Two independent random samples of sizes n1 = 4 and
a. Calculate s2, the pooled estimator of s2.
b. Find a 90% confidence interval for (µ1 - µ2), the difference between the two population means.
c. Test H0: (µ1 - µ2) = 0 against Ha: (µ1 - µ2) < 0 for ? = .05. State your conclusions.

 







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This question was answered on: Jul 11, 2017

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