Question #2017296: Confidence Intervals


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.

Monthly Sales
Salesperson After Before
1 94 90
2 82 84
3 90 84
4 76 70
5 79 80
6 85 80

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.

Solution: The solution consists of 212 words (2 pages)
Deliverables: Word Document

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