Question: Suppose a sample of n =25 items is selected from a population of manufactured products and the weight, X , of each item is recorded.

Suppose a sample ofn=25 items is selected from a population of manufactured products and the weight,X, of each item is recorded. Prior experience has shown that the weight has a probability distribution with= 6 ounces and= 2.5 ounces. What is the standard error of the mean?

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