Question

In: Statistics and Probability

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)

Show all steps please

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