An economist wants to find a 90% confidence interval for the mean sale price of houses...
An economist wants to find a 90% confidence interval for the mean sale price of houses in a state. How large a sample should she select so that the estimate is within $3500 of the population mean? Assume that the standard deviation for the sale prices of all houses in this state is $31,500.
answer is 221 but unsure of how to get this answer
Homework Answers
We are given population standard deviation and hence we use Z score to find sample size and Sample size we calculated is 221 which is the answer. Hence Answer is Sample Size = 221
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An economist wants to find a 90% confidence interval for the
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