Using the data gathered from the thousands salary of call center agents, construct a Histogram and Frequency Polygon. EMPLOYEES SALARY 4 15,000 employees 9. employees 18,000 16 21,000 employees 23 24,000 employees 17 27,000 employees 8 30,000 employees 3 33,000 employees NOTE: Frequency data in Polygon used (0, 5, 10, 20, 25) respectively.

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A: Normal distribution has mean =79 and SD = 7, p(X<=65) = ?    

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