[Steps Shown] A service station advertises that customers will have to wait no more than 30 minutes for an oil change. A sample of 25 oil changes has a standard
Question: A service station advertises that customers will have to wait no more than 30 minutes for an oil change. A sample of 25 oil changes has a standard deviation of 5.2 minutes. Find the 95% confidence interval of the population standard deviation of the time spent waiting for an oil change.
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