Tibbit94
22.01.2021 •
Mathematics
The academic motivation and study habits of female students as a group are better than those of males. The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures these factors. The distribution of SSHA scores among the women at a college has mean 120 and standard deviation 28, and the distribution of scores among male students has mean 105 and standard deviation 35. You select a single male student and a single female student at random and give them the SSHA test.
What is the expected value of the difference (female minus male) between their scores?
What is the probability that a randomly selected Male would have a higher score than a Randomly selected female?
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