Question: Find the minimum sample size needed to be 95% confident that the sample variance is within 20% of the population variance. Assume that each sample

Find the minimum sample size needed to be 95% confident that the sample variance is within 20% of the population variance.

Assume that each sample is a simple random sample obtained from a normally distributed population. Use Table 7-2 to find the indicated sample size.

Find the minimum sample size needed to be 95% confident that the

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