SOLUTION: 90​% of the voters favor Ms. Stein. If 5 voters are chosen at​ random, find the probability that at most 2 voters support Ms. Stein.

Algebra ->  Probability-and-statistics -> SOLUTION: 90​% of the voters favor Ms. Stein. If 5 voters are chosen at​ random, find the probability that at most 2 voters support Ms. Stein.      Log On


   



Question 1103914: 90​% of the voters favor Ms. Stein. If 5 voters are chosen at​ random, find the probability that at most 2 voters support Ms. Stein.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P%28X%29=C%285%2CX%29%2A%280.90%29%5EX%2A%281-0.90%29%5E%2810-X%29
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At most 2 means 0, 1, and 2.
P=P%281%29%2BP%282%29%2BP%283%29
P=0.0086