Catherine Chao,Director of Marketing Research,is evaluating consumer acceptance of alternative toothpaste packages. She wonders whether acceptance is influenced by children in the household. Her staff prepared the following contingency table from a random sample of 100 households. Catherine's null hypothesis is ______________.
A) "children in household" is not independent of "preferred package"
B) "children in household" is independent of "preferred package"
C) "children in household" is related to "preferred package"
D) "children in household" influences "preferred package"
E) "pump" is independent of "tube"

Question

Catherine Chao,Director of Marketing Research,is evaluating consumer acceptance of alternative toothpaste packages. She wonders whether acceptance is influenced by children in the household. Her staff prepared the following contingency table from a random sample of 100 households.  Catherine's null hypothesis is ______________.
A) "children in household" is not independent of "preferred package" 
B) "children in household" is independent of "preferred package" 
C) "children in household" is related to "preferred package" 
D) "children in household" influences "preferred package" 
E) "pump" is independent of "tube"

Quizplus · Accepted Answer

The null hypothesis is always a statement of no relationship or no effect. In this case, B is the correct option because the null hypothesis is that "children in household" is independent of "preferred package." If the data supports rejecting this null hypothesis, it would suggest that there is a relationship or influence between having children in the household and preferred toothpaste package.

Catherine Chao,Director of Marketing Research,is Evaluating Consumer Acceptance of Alternative