Sam Hill,Director of Media Research,is analyzing subscribers to the Life West of the Rockies magazine.He wonders whether subscriptions are influenced by the head of household's employment classification.His staff prepared the following contingency table from a random sample of 300 households: Sam's null hypothesis is ___.
A)"head of household classification" is related to "subscribes"
B)"head of household classification" is not independent of "subscribes"
C)"head of household classification" is independent of "subscribes"
D)"head of household classification" influences "subscribes"
E)"clerical is not related to managerial"

Question

Sam Hill,Director of Media Research,is analyzing subscribers to the Life West of the Rockies magazine.He wonders whether subscriptions are influenced by the head of household's employment classification.His staff prepared the following contingency table from a random sample of 300 households:  Sam's null hypothesis is ___.
A)"head of household classification" is related to "subscribes" 
B)"head of household classification" is not independent of "subscribes" 
C)"head of household classification" is independent of "subscribes" 
D)"head of household classification" influences "subscribes" 
E)"clerical is not related to managerial"

Quizplus · Accepted Answer

The null hypothesis in this case is that "head of household classification is independent of subscribes". This means that there is no relationship between these two variables. The question specifically asks whether there is an influence of employment classification on subscriptions, which is the alternative hypothesis. Therefore, the best option is to choose C as the null hypothesis and consider the alternative hypothesis that the two variables are related.

Sam Hill,Director of Media Research,is Analyzing Subscribers to the Life