Exhibit 18-1
Ten people were given two types of cereal, Brand X and Brand Y. Three people preferred Brand X, 5 people preferred Brand Y, and 2 people were undecided. We want to determine whether or not the two products are equal.
-Refer to Exhibit 18-1. The hypothesis is to be tested at the 5% level. The decision rule is not to reject the null hypothesis if
A)-1.96

Question

Exhibit 18-1
Ten people were given two types of cereal, Brand X and Brand Y. Three people preferred Brand X, 5 people preferred Brand Y, and 2 people were undecided. We want to determine whether or not the two products are equal.
-Refer to Exhibit 18-1. The hypothesis is to be tested at the 5% level. The decision rule is not to reject the null hypothesis if
A)-1.96 < A < 1.96
B)-2.262 < t < 2.262
C)the number of "+" signs is greater than or equal to 2 and less than or equal to 6
D)the number of "+" signs is greater than or equal to 1 and less than or equal to 7

Quizplus · Accepted Answer

The decision rule for a sign test at a 5% significance level with 10 trials is to not reject the null hypothesis if the number of "+" signs (indicating preference for Brand X) is between 2 and 6.

Exhibit 18-1 Ten People Were Given Two Types of Cereal, Brand X