SOLUTION: In a large metropolitan area, past records revealed that 30 percent of all the high school graduates go to college. From 10 graduates selected at random, what is the probability th

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Question 1184907: In a large metropolitan area, past records revealed that 30 percent of all the high school graduates go to college. From 10 graduates selected at random, what is the probability that: Exactly 8 will go to college
Answer by ikleyn(52812) About Me  (Show Source):
You can put this solution on YOUR website!
.

It is the binomial type probability distribution problem.


The number of trials n= 10; the probability of the success trial is  30% = 0.3,  and the number of success trials k = 8. 


    P = C%5B10%5D%5E8%2A0.3%5E8%2A%281-0.3%29%5E2 = %28%2810%2A9%29%2F%281%2A2%29%29%2A0.3%5E8%2A0.7%5E2 = 0.001447 (rounded) = 0.1447%.     ANSWER

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