Question: A university placement director collected sample data giving first-year earnings of undergraduate supply chain and marketing majors (in thousands of dollars) as follows: 18.5 12.00

A university placement director collected sample data giving first-year earnings of undergraduate supply chain and marketing majors (in thousands of dollars) as follows: 18.5 12.00 17.0 22.5 31.4 10.2 25.6 19.2 17.6 17.3 22.2 13.3. a. Using the data giving as a sample, what is the average earning? b. What is the variance? c. What is the standard deviation

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