Friday
March 27, 2015

Homework Help: Discrete Math

Posted by Martin on Tuesday, November 15, 2011 at 12:16pm.

You have two decks of 26 cards. Each card in each of the two decks has a different letter of the alphabet on it. You pick at random one card from each of the two decks. A vowel is worth 3 points and a consonant is worth 0 points. Let X = the sum of the values of the two cards picked. Find E(X), V(X), and the standard deviation of X.

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