Question: Suppose a random sample of 22 items produces a sample standard deviation of 16. a. Use the sample results to develop a 90% confidence interval

Suppose a random sample of 22 items produces a sample standard deviation of 16.
a. Use the sample results to develop a 90% confidence interval estimate for the population variance.
b. Use the sample results to develop a 95% confidence interval estimate for the population variance.

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