karlaposas1491 karlaposas1491

17-10-2022
Mathematics

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the mean age of psychology graduate students at nyu has been 27 years for a decade. a random sample of 25 graduate students was recently taken. the sample mean was 29 years and the sample standard deviation was 4 years. does the mean age of the sample differ from the population? are the data significant at the 5% probability level?

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