Exhibit 20

Multiple Choice

Exhibit 20.11.A wine magazine wants to know if chefs can tell the difference between duck liver pate and wet dog food.Eighteen chefs were asked to rate both the pate and dog food on a scale from 1 to 5,with 1 corresponding to "inedible" and 5 to "very tasty".The results are shown in the following table. Refer to Exhibit 20.11.Using the p-value approach and ,the appropriate conclusion is:

A) Reject the null hypothesis,conclude chefs prefer pate
B) Reject the null hypothesis,conclude there is a difference in the preference between pate and dog food
C) Reject the null hypothesis,cannot conclude there is a difference in the preference between pate and dog food
D) Reject the null hypothesis,conclude nothing