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An organizational psychologist has been contacted by the human resource departme

ID: 2928183 • Letter: A

Question

An organizational psychologist has been contacted by the human resource department of a large government agency. They are concerned about their performance evaluation system. In particular they are concerned about sex bias. The psychologist obtains a data set containing all employee IDs, their sex, and their performance evaluation score for the last year. The performance evaluation scores can vary between 100 and 500. What statistical test should she use to determine if the one group if one sex is scoring significantly higher or lower than the other? And explain why.

Explanation / Answer

Since they are concerned about the sex bias, they would need to compare the average score of males and females so that they can test whether there is a significance difference between the mean score of males and females.

Hence,

Independent t test for two sample means would be used for testing.

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