Imagine that you are conducting a one-variable chi-square test to investigate the hypothesis that there are equal numbers of cat lovers and dog lovers in the office at work. Having conducted a survey, you found 150 preferred dogs and 120 preferred cats. What would the expected frequencies be in each cell?
A)150 and 120
B)270
C)135
D)More information is needed to calculate the expected frequencies.

Question

Quizplus · Accepted Answer

With a null hypothesis of equal proportions of cat lovers and dog lovers, the expected frequency for each category would be (total number of respondents / 2). Thus, the expected frequency for cat lovers would be 135 and the expected frequency for dog lovers would also be 135. Therefore, the answer is C.

Imagine That You Are Conducting a One-Variable Chi-Square Test to Investigate