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April 20, 2014

Homework Help: statistics

Posted by b on Friday, April 27, 2012 at 3:59pm.

A sociologist is studying marriage customs in a rural community in Denmark to determine the age of the woman at the time of her first marriage. The sample standard deviation of these ages was 2.3 years. The sociologist wants to estimate the population mean age of a woman at the time of her first marriage. How large a sample is required to be 99% confident that the sample mean of ages is within 0.25 years of the population mean?

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