Back to 8.1 A Single Population Mean Using the Normal Distribution

8.1 Exercise 7

Avg difficulty 2.5

Refer back to the pizza-delivery Try It exercise. The population standard deviation is six minutes and the sample mean deliver time is 36 minutes. Use a sample size of 20. Find a 95 percent confidence interval estimate for the true mean pizza-delivery time.

OpenStax Statistics, 8.1 A Single Population Mean Using the Normal Distribution, exercise 7

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