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Note: It is recommended that you save your onse as you complete each question. Question 13 (3 points) Calculate the sample standard deviation of the following four prices: prices 8.4 19.3 18.1 29.8 Round your answer to two decimal places. Your Answer: Answer Save Question 14 (3 points) Tactical decisions define O the day-to-day activities of the organization. O the goals and plans of the organization. O the domain of operations managers, who are close to the customer O the steps taken to achieve the goals and objectives Save Question 15 (3 points)

Explanation / Answer

13. Mean = (8.4 + 19.3 + 18.1 + 29.8)/4 = 18.9

Sum of squares of differences = (8.4-18.9)*(8.4-18.9) + (19.3-18.9)*(19.3-18.9) + (18.1-18.9)*(18.1-18.9) + (29.8-18.9)*(29.8-18.9) = 229.86

Sample varaince = 229.86/3 = 76.62

Sample standard deviation = 76.62 = 8.75

14. Tactical decisions define

the steps taken to achieve the goals and objectives.

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