In Which of the Following Situations Should an a Priori

Multiple Choice

In which of the following situations should an a priori contrast be used?

A) A t-test is used to conclude that men consume more hamburgers than women
B) A chi-square test is used to conclude that there is a difference in type of living quarters by class status
C) Using a one-way ANOVA, significant differences in ad recall are found between three experimental groups and one control group
D) A Z test indicates that the national average of the number of soft drinks consumed in the US exceeds that of France
E) All of the above should use an a priori contrast