Suppose we know that a confidence interval is 4212 4788


Question: 1. 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% confidence interval estimate for the true mean pizza delivery time.

2. Suppose we know that a confidence interval is (42.12, 47.88). Find the error bound and the sample mean.

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Basic Statistics: Suppose we know that a confidence interval is 4212 4788
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