Chi-Square Test Help?

Question

Can people really identify their favorite band of Cola? At a = .05, is the correctness of the prediction different for he two types of Cola drinkers? Could you identify your favorite in this type of test?

-----------------------Regular Cola---Diet Cola

Yes- got it right........7.................7

No- got it wrong.......12...............20

Answer 1

ANSWER: NOT CHI-SQUARE TEST.

ANSWER: JOINT PROBABILITY

Why???

Table indicates independent variables "Cola" and "identify"

For each independent variable, corresponding observation is tabulated. Tabulations therefore are Joint Probability.