A service station advertises that customers will have to wait no more than 30 minutes for an oil cha
Question: A service station advertises that customers will have to wait no more than 30 minutes for an oil change. A sample of 28 oil changes has a standard deviation of 5.2 minutes. Using the chi-square distribution, construct a 99% confidence interval for the population standard deviation ? of the time spent waiting for an oil change. Assume the data are normally distributed.
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Solution: The solution consists of 2 pages
Deliverables: Word Document
Deliverables: Word Document
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