The monthly advertising expenditure of the company is normally distributed with a standard deviation of $240. If a sample of 36 randomly selected months yields a mean advertising expenditure of $3690 monthly, what is a 99% confidence interval for the mean of the company’s monthly advertising expenditure?
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The monthly advertising expenditure of the company is
standard deviation of $240. If a sample of 36 randomly selected months yields a mean
advertising expenditure of $3690 monthly, what is a 99% confidence interval for the mean
of the company’s monthly advertising expenditure?
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