Question: 18. The following shows the monthly sales in units of six salespersons before and after a bonus plan was introduced. At 95% confidence, construct the interval for the difference in the Matched Pairs.
Subtract the two columns to get the differences. Then just plug those into List 1 in your calculator to find the average of the differences (d-bar) and the standard deviation would be Sd. Then just build the interval.
Deliverables: Word Document