A Researcher Randomly Sampled 30 Graduates, 18 Males and 12

Multiple Choice

A researcher randomly sampled 30 graduates, 18 males and 12 females, of an MBA program and recorded data concerning their starting salaries. Of primary interest to the researcher was the effect of gender on starting salaries. Statistics of the mean salaries of the females and males in the sample were computed. The sample standard deviations suggest that the variability of starting salaries of the two groups is almost the same. Suppose the starting salaries from both groups can be considered as normally distributed. Which of the following tests will be the most appropriate?

A) Wilcoxon signed rank test
B) separate-variance t test
C) pooled-variance t test
D) paired t test