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F-test

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The following hypotheses are given:

Ho: s2 sub 1 = s2 sub 2
H1: s2 sub 1 = s2 sub 2

A random sample of five observations from the first population resulted in a standard deviation of 12. A random sample of seven observations from the second population showed a standard deviation of 7. At the .01 significance level, is there more variation in the first population?

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(1) Calculate your test statistic. The F statistic is calculated by dividing one of the standard deviations by the other. Choose which goes in the numerator and which goes in the denominator so that F is greater ...

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