SOLUTION: A college computer lab experience occasional computer malfunctions. In a 25 day period 9 computers malfunctioned. Using poission distribution what is the probability that on any

Question 934912: A college computer lab experience occasional computer malfunctions. In a 25 day period 9 computers malfunctioned. Using poission distribution what is the probability that on any one day Exactly 3 computers will malfunction? *round your answer to 4 significant digits. You just show the value for u. 3
Part B: what is the probablity than anyone day at least 2 computers will malfunction?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
avg/day = 25/9 = 2.8
POISSON Distributtion
....
P(x=3) = poissonpdf(2.8,3) = .2225
P(x ≥ 2) = 1 - poissoncdf(2.8,1)= 1-.1703 = .8297
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