SOLUTION: Please help me. I need your help desperately. I have tried this question few times and stillnot sure how to do it. Can people really identify their favorite brand of cola? V

Algebra ->  Probability-and-statistics -> SOLUTION: Please help me. I need your help desperately. I have tried this question few times and stillnot sure how to do it. Can people really identify their favorite brand of cola? V      Log On


   

Question 130865: Please help me. I need your help desperately. I have tried this question few times and stillnot sure how to do it.
Can people really identify their favorite brand of cola? Volunteers tasted Coca-Cola Classic, Pepsi, Diet Coke, and Diet Pepsi, with the results shown below. Research question: At α = .05, is the correctness of the prediction different for the two types of cola drinkers? Could you identify your favorite brand in this kind of test? Since it is a 2 × 2 table, try also a two-tailed two-sample z test for π1 = π2 and verify that z2 is the same as your chi-square statistic.Which test do you prefer? Why?
Thank you for your help
Correct? Regular Cola Diet Cola Row Total
Yes, got it right 7 7 14
No, got it wrong 12 20 32
Col Total 19 27 46
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
An answer has been posted.
Cheers,
Stan H.