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A market survey has shown that people will spend an average of $15.48 each for your product next year, base on a sample survey of
A market survey has shown that people will spend an average of $15.48 each for your product next year, base on a sample survey of 483 people. The standard deviation of the sample was $2.52. Find the 95% confidence interval for the next years mean expenditure per person in the population.
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