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 being tested here is whether there is a relationship between the presence of children in a household and the preferred toothpaste package. The null hypothesis assumes that there is no such relationship, and therefore, the presence of children in a household is independent of the preferred package. Hence, the correct choice is B, which states that "children in household" is independent of "preferred package".

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