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Null and alternative hypotheses

I have decided to try a CRM application for its usefulness in my organizations sales department.

I have 500 reps, and for my own ease, I have divided our primary area of responsibility into 4 separate divisions: North Slope, Western Coastal Villages, Eastern Border Mines, and South.

I gave the sales force the CRM 3 months ago to use. BUt I only gave it to half of the sales force in each division.

I now need to make my decision on purchase.

Using my situation, please in 1-2 pages describe to me possible null and alternative hypotheses for a nonparametric test using chi square.

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