Confidence interval of playbill magazine

Reference no: EM13105346

Playbill magazine reported that the mean annual household income of it's readers is $219,155. Assume this estimate of the mean annual household is based on a sample of 91 house-holds and based on past studies, the population standard deviation is known to be $33,010.

A Develop a 90% confidence interval estimate of the population mean.

Reference no: EM13105346

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