Consider the following frequency distribution. Class Midpoint Frequency 0 - 9 4.5 2 10 – 19 14.5 8. 20 – 29 24.5 14 30 – 39 34.5 What is the value of the sample mean? Select one: а. 8.33 b. 22.5 С. 69.33 d. 16.5 е. 8.47 f. 71.72

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A: Mean = summation Xi / n Here n= 6 Mean = (12+18-3+7+7-19)/6 Mean = 3.67

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