Problem 3. (15 points) Past experience shows that the standard deviation of the yearly income of textile workers in a ce
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Problem 3. (15 points) Past experience shows that the standard deviation of the yearly income of textile workers in a ce
Problem 3. (15 points) Past experience shows that the standard deviation of the yearly income of textile workers in a certain state is $400. How many textile workers would you need to sample if you wished to estimate the population mean to within $40.00, with probability .90?
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