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) Pooled-variance t test B) Wilcoxon rank sum test.
C) Separate-variance t test D) Paired t test
Question 2
Are Japanese managers more motivated than American managers? A randomly selected group of 100 managers from each group were administered the Sarnoff Survey of Attitudes Toward Life (SSATL), which measures motivation for upward mobility. The mean and standard deviation of the SSATL scores are computed. The standard deviations of the SSATL scores suggest that the standard deviation from the two groups is very different. Which of the following tests will be the most appropriate?
A) t test for the mean B) Z test for the proportion
C) Pooled-variance t test D) Separate-variance t test
Water striders serve as a model organism for the study of sexual conflict between males and females.
(a) Savanna baboons live in female-philopatric groups, among which males migrate. (b) Chimpanzees li
Despite the traditional focus on males, females actively choose mates and are the driving force in t
Risk of death from motorcycle accidents (dashed lines) and passenger accidents (solid lines) per 100
Sample Stress Management Program