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Statistics 7 Online
OpenStudy (anonymous):

Determine the margin of error in estimating the population mean height from this sample’s mean based upon a 90% level of confidence. (You may assume that previous research has demonstrated the population standard deviation on heights of similar groups of people is 10.8 cm). The mean has been determined to be 168.55 inches. -I have 82 sample heights...where do I begin?

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