Question: In problem 627, give a 95% confidence interval for the variance of the transit time for all goods. In problem A transportation company wants to

In problem 6–27, give a 95% confidence interval for the variance of the transit time for all goods.

In problem A transportation company wants to estimate the average length of time goods are in transit across the country. A random sample of 20 shipments gives x-bar = 2.6 days and s = 0.4 day.

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