A brand manager is concerned that her brands market share may be evenly distributed throughout the country. In a survey in which the country was divided into four geographic region, a random sampling of 100 customers in each region was surveyed, with the following results.At a = 0.05, test whether the brands market share is the same across the four regions.

	REGION
Northeast	Northwest	Southwest	Southeast
Purchase the brand	40	55	45	50
Do not purchase	60	45	55	50