Question

A marketing director for a beverage company conducted a study to investigate people’s soda preferences in two regions of the country. The director selected a random sample of  100 people from the east coast and a random sample of  100 people from the west coast to survey. The responses are summarized in the following table.

	East Coast	West Coast
Regular soda	44	37
Diet soda	39	42
No preference	17	21
Total	100	100

Do the data provide convincing statistical evidence, at the level of  α=0.05, that the preferences are different between the two regions of the country? Complete the appropriate inference procedure to support your answer.

Answer 1