Homework Help: math

Posted by Diana on Wednesday, July 29, 2009 at 2:09pm.

on a tv game show, the contestant is asked to select a door and then is rewrded with the prize behind the door selected. if the doors can be selected with equal probability, what is the expected value of the selection if the three doors have behind them a 40 thousand dollar car, a $3 silly straw, and a $50 math textbook?

math - bobpursley, Wednesday, July 29, 2009 at 2:14pm
expected value= 1/3 * 40,000 + 1/3*3 + 1/3 * 50

expected value is the sum of the products of the probability of each outcome times the value of the outcome.

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