Mathematics, 29.12.2020 18:30 Aminton737

A university has 55% student girls and 45% boys. A student is chosen at random to take a test. The test for boys has 25 questions and the one for girls has 30 questions. Let X be the random variable, which represents the number of questions to which the selected student answered correctly. Describe the distribution table for X, and calculate the mean and dispersion.

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A university has 55% student girls and 45% boys. A student is chosen at random to take a test. The t...

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