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Unformatted text preview: (a) What is the expected value of the length of the piece that we are left with after breaking twice? (b) What is the variance of the length of the piece that we are left with after breaking twice? 3. Widgets are stored in boxes, and then all boxes are assembled in a crate. Let X be the number of widgets in any particular box, and N be the number of boxes in a crate. Assume that X and N are independent integervalued random variables, with expected value equal to 10, and variance equal to 16. Evaluate the expected value and variance of T , where T is the total number of widgets in a crate. Page 1 of 1...
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 Spring '11
 Proasin
 Computer Science, Electrical Engineering

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