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:

Brain Activity

The functioning and processes occurring in the brain, including neural activity, cognitive processes, and consciousness.

Stage 1 Sleep

The initial phase of the sleep cycle, a light sleep stage from which individuals can be easily awakened.

REM Sleep

A stage of sleep characterized by rapid eye movement, vivid dreaming, and increased brain activity.

Dement's Experiment

A study by William Dement, focusing on the phases and effects of sleep, particularly REM sleep, on emotional health and memory, significantly contributing to sleep research.