A Researcher Randomly Sampled 30 Graduates,18 Males and 12 Females,of

question 175

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)Pooled-variance t test.
• B)Separate-variance t test.
• C)Paired t test.
• D)Wilcoxon rank sum test.

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Definitions:

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A behavior that is motivated by the desire to terminate an aversive stimulus, resulting in the avoidance or cessation of discomfort.

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A process in behavior analysis and modification, which involves applying an undesired or negative stimulus to decrease or eliminate an undesirable behavior.