Discussion:
Q: 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. Use α= .05
Research question: Is the correctness of the prediction different for the two types of cola drinkers?
Correct? Regular Coke Diet Coke Row Total
Yes 7 7 14
No 12 20 32
Column Total 19 27 46
A. Choose the Hypothesis
Ho:
H1:
B. Specify the Decision Rule
C. Calculate the Test Statistic
D. Make the Decision. Were the Chi-Square assumptions met?
E. Give an interpretation of the Decision
F. P-value Method
1. Calculate the P-value, what is it?
2. Does that P-value support the Decision in Part D?