Mathematics, 07.08.2021 01:00 prayingfeet7799

Suppose average pizza delivery times are normally distributed with an unknown population mean and a population standard deviation of six minutes. A random sample of 28 pizza delivery restaurants is taken and has a sample mean delivery time of 36 minutes. Find a 90% confidence interval estimate for the population mean delivery time.

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Suppose average pizza delivery times are normally distributed with an unknown population mean and a...