2. A random sample of 21 pages is used to estimate the population variance of the...

2. A random sample of 21 pages is used to estimate the population variance of the number of typographical errors in a book. The sample mean and sample standard deviation are calculated as 7.34 and 5.11, respectively. Assume that the population is normally distributed.

a. Construct a 95% interval estimate of the population standard deviation. b. Construct a 99% interval estimate of the population standard deviation.

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orchestra answered 1 year ago

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