Suppose that the delivery times for a local pizza delivery restaurant are normally distributed with...
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Suppose that the delivery times for a local pizza delivery restaurant are normally distributed with an unknown mean and standard deviation. A random sample of 24 deliveries is taken and gives a sample mean of 27 minutes and sample standard deviation of 6 minutes. The confidence interval is (24.47, 29.53). Find the margin of error, for a 95% confidence interval estimate for the population mean.
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