SOLUTION: One in five South African adults have outstanding traffic fines. If seven South African adults are randomly selected, calculate the probability that a) three have outstanding tr

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Question 866782: One in five South African adults have outstanding traffic fines. If seven South African adults are randomly selected, calculate the probability that
a) three have outstanding traffic fines.
b) at most one has an outstanding traffic fine.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

p(fine) = 1/5 = .2,   n = 7

P(x=3) = binompdf(7, .2, 3)= .1147

P(x ≤ 1) = binomcdf(7, .2, 1) = .5767