Question: Show your solutions using PhStat only 1.A recent study of 28 city residents showed that the mean of the time they had lived at their

Show your solutions using PhStat only

1.A recent study of 28 city residents showed that the mean of the time they had lived at their present address was 9.3 years and the standard deviation was 2 years. Assuming a normal population, find the 90% confidence interval of the true mean. Interpret the interval estimate.

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