Question

The heights (inches) of the students on a campus are assumed to have a normal distribution with a variance of 25 inches. Suppose that we want to construct a 95 percent confidence interval for the population mean μ and have it accurate to within 0.5 inch. The minimum sample size required is


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Answer 1

Answer:

A confidence interval for a population mean with a known standard deviation is based on the fact that the sample means follow an approximately normal distribution. Suppose that our sample has a mean of \overline{x}\text{ = 10} and we have constructed the 90% confidence interval (5, 15) where EBM = 5.

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Answer 2

Answer:

The heights of the students on

a campus . the minimum sample size required.

Explanation:

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