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2 Statistics Problems on hypothesis tests of Standard deviations

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3. A random sample of eight observations from the first population resulted in a standard deviation of 10. A random sample of six observations from the second population resulted in a standard deviation of 7. At the .02 significance level, is there a difference in the variation of the two populations?

4. A random sample of five observations 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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2 Statistics Problems on hypothesis tests of Standard deviations

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