Question 7: The following data show the monthly sales in units of six salespersons before and after a bonus plan was int
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Question 7: The following data show the monthly sales in units of six salespersons before and after a bonus plan was int
Question 7: The following data show the monthly sales in units of six salespersons before and after a bonus plan was introduced. Let the difference "d" be d = After - Before. Monthly Sales Salesperson Before 90 84 84 70 80 6 80 We would like to calculate a 99% confidence interval to estimate the mean difference in monthly sales for all sales individuals at this company. What is the margin of error? O 1 2 3 4 5 O O O 2.576 2.576 4.032 3.250 3.58 16.65² 6 3.58 6.77- 6 6.65- 6.77- 6 6 94 82 90 76 79 85 After