Friday
December 19, 2014

Homework Help: probability and statistics

Posted by Derek on Monday, November 24, 2008 at 5:39pm.

a set of 10 cards consists of 5 red cards and 5 black cards. the cards are shuffled thoroughly and i choose one at random, observe its color, and replace it in the set. the cards are thouruoghly reshuffled and i again choose a card at random, observe its color and replace it in the set. this is done a total of four times. let x be the number of red cards observed in these four trials. the mean of x is?

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