Catherine Chao, Director of Marketing Research, Is Evaluating Consumer Acceptance

Catherine Chao, Director of Marketing Research, is evaluating consumer acceptance of alternative toothpaste packages.She wonders whether acceptance is influenced by the age of the 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"