7. During a trip to your local grocery store, you begin to wonder if soda preferences (Coke vs. Pepsi) are related to geographic region of residence (South vs. North). Go through ALL hypothesis testing steps to evaluate whether the distribution of soda preference is the same for Southerners and Northerners using Chi square; this should include calculating an odds ratio to compare the odds of preferring Coke for Southerners compared to Northerners. You do notneed to evaluate assumptions; the critical value is 3.84. (16)

observed Coke Pepsi

Southerners 32 10

Northerners 8 20

expected Coke Pepsi

Southerners 24 18

Northerners 16 12