Exhibit 19-1
Fifteen people were given two types of cereal, Brand X and Brand Y. Two people preferred Brand X and thirteen people preferred Brand Y. We want to determine whether or not customers prefer one brand over the other.
-Refer to Exhibit 19-1. To test the null hypothesis, the appropriate probability distribution to use is
A)normal
B)chi-square
C)Poisson
D)binomial

Question

Quizplus · Accepted Answer

The appropriate probability distribution to use is a binomial distribution, as it is used to model the number of successes in a fixed number of trials. In this case, the number of people who preferred Brand X can be modeled as a binomial distribution with n=15 trials and p=0.5 (assuming no preference).

Exhibit 19-1 Fifteen People Were Given Two Types of Cereal, Brand X