Mathematics, 07.05.2020 13:58, cpalabamagirl2595

Mr. Good Wrench advertises that a customer will have to wait no more than 30 minutes for an oil change. A sample of 26 oil changes had a standard deviation of 4.8 minutes. Use this information to calculate a 90% confidence interval for the population standard deviation waiting time for an oil change.

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Mr. Good Wrench advertises that a customer will have to wait no more than 30 minutes for an oil chan...