A brand manager is concerned that her brand's share may be unevenly distributed throughout the country. In a survey in which the country was divided into four geographic regions, a random sampling of 100 consumers in each region was surveyed, with the following results:

	Region
NE	NW	SE	SW	Total
Purchase the brand	40	55	45	50	190
Do not purchase	60	45	55	50	210
Total	100	100	100	100	100

You are asked to perform a Chi Square test to test whether the regions and customers purchasing the brand are independent.

1. State the null and alternative hypotheses.

2. Calculate the Chi Square test statistic.

3. Test the null hypothesis at two appropriate significance levels and write the conclusion statement.