Question: A quality-control technician selected twenty-five 1-pound boxes from a production process and found the following distribution of weights (in ounces): Weight Frequency Weight Frequency 15.9515.98

A quality-control technician selected twenty-five 1-pound boxes from a production process and found the following distribution of weights (in ounces):

Weight Frequency Weight Frequency 15.95–15.98 2 16.04–16.07 3 15.98–16.01 4 16.07–16.10 1 16.01–16.04 15 Find the mean and the standard deviation for this weight distribution.

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