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Suppose you plan to open a gift shop to cater to people with high incomes. In a survey of 100 target customers, you find that
Suppose you plan to open a gift shop to cater to people with high incomes. In a survey of 100 target customers, you find that that the sample average income is $95,000 with a standard deviation of $18,000. Calculate the confidence interval for the true average income of the target population with a 95% confidence level.
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