Let x denote the number of boys that are selected and let y


Suppose that a class contains 10 boys and 15 girls, and suppose that 8 students are to be selected at random from the class without replacement. Let X denote the number of boys that are selected, and let Y denote the number of girls that are selected. Find E( X - Y).

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Basic Statistics: Let x denote the number of boys that are selected and let y
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