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Intern
Joined: 08 Oct 2012
Posts: 2

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08 Oct 2012, 23:32
A die is rolled once. Call the result N. Then, the die is rolled N times, and those rolls which are equal
to or greater than N are summed (other rolls are not summed). What is the distribution of the resulting
sum? What is the expected value of the sum?

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IMPORTANT   [#permalink] 08 Oct 2012, 23:32
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