A recent market study produced the following data on annual income level by market area: Annual...

A recent market study produced the following data on annual income level by market area:

Annual Income Level	Area A	Area B	TOTAL
Up to 50K	1250	2350	3600
50K-80K	1460	1540	3000
Over 80K	265	385	650
TOTAL	2975	4275	7250

1. State the null and alternative hypotheses for a Chi Square test to determine whether annual income level is dependent of market area. (2 Points)

2. State the rejection rule using the critical value approach. Let alpha = 0.05. (2 Points)

3. Calculate the expected frequency for the cell “Over 80K” and “Area B” (2 Points)

4. If the Chi Square statistic is 131.524, what is your conclusion? (2 Points)

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orchestra answered 2 years ago

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