A Study Was Done To Determine The Average

A study was done to determine the average number of homes that a homeowner will own in his or her lifetime.For the 30 homeowners surveyed, the sample mean was 4.2 and the sample standard deviation was 2.1. Assuming the distribution is normally distributed, which distribution should be used to calculate the critical value for a 95% confidence interval?

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A study was done to determine the average

Question
A study was done to determine the average number of homes that a homeowner will own in his or her lifetime.

For the 30 homeowners surveyed, the sample mean was 4.2 and the sample standard deviation was 2.1. Assuming the distribution is normally distributed, which distribution should be used to calculate the critical value for a 95% confidence interval?

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