SOLUTION: If the overall percentage of success in an exam is 60 , what is the probability that out is a group of 4 students , at least one has passed

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Question 1084943: If the overall percentage of success in an exam is 60 , what is the probability that out is a group of 4 students , at least one has passed
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P%28X%29=C%284%2CX%29%2A%280.6%29%5EX%2A%281-0.6%29%5E%284-X%29
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P%28X%3E=1%29=1-P%280%29
P%28X%3E=1%29=1-0.0256
P%28X%3E=1%29=0.9744