Question: A sample of size n 90 is drawn from a normal population whose standard deviation is O = 6.4. The sample mean is x

A sample of size n 90 is drawn from a normal population whose standard deviation is O = 6.4. The sample mean is x 49.86, Part 1 of 2 (a) Construct a 99.8% confidence interval for p. Round the answer to at least two decimal places. A 99.8% confidence interval for the mean is x

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