SOLUTION: Please help me. I am having problem understanding this question. Can people really identify their favourite brand of cola? Volunteers tasted Coca-Cola Classic, Pepsi, Diet Coke

Algebra ->  Probability-and-statistics -> SOLUTION: Please help me. I am having problem understanding this question. Can people really identify their favourite brand of cola? Volunteers tasted Coca-Cola Classic, Pepsi, Diet Coke      Log On


   

Question 131118: Please help me. I am having problem understanding this question.
Can people really identify their favourite 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 favourite 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?
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
Thank you for your help.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
This problem was worked today.
Cheers,
Stan H.