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The following is a frequency distribution for the ages of a sample of employees at a local company. Age Frequency 30-39 7 40-49 4

The following is a frequency distribution for the ages of a sample of employees at a local company. Age Frequency 30-39 7 40-49 4 50-59 8 60-69 5 70-79 1 (a) Determine the average age for the sample. (b) Compute the variance. (Round your answer to two decimal places.) 7.5 (c) Compute the standard deviation. (Round your answer to two decimal places.) (d) Compute the coefficient

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