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 4444 3737 Diet soda 3939 4242 No preference 1717 2121 Total 100100 100100 Do the data provide convincing statistical evidence, at the level of α=0.05α=0.05, that the preferences are different between the two regions of the country? Complete the appropriate inference procedure to support your answer.

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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

4444

3737

Diet soda

3939

4242

No preference

1717

2121

Total

100100

100100

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

 

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