SOLUTION: Copykwik has four photocopy machines: A, B, C, and D. The probability that a given machine will break down on a particular day is given below. P(A) = 1/48 P(B) = 1/55

Algebra ->  Probability-and-statistics -> SOLUTION: Copykwik has four photocopy machines: A, B, C, and D. The probability that a given machine will break down on a particular day is given below. P(A) = 1/48 P(B) = 1/55       Log On


   



Question 1118547: Copykwik has four photocopy machines: A, B, C, and D. The probability that a given machine will break down on a particular day is given below.
P(A) =
1/48
P(B) =
1/55
P(C) =
1/75
P(D) =
1/31

Assuming independence, what is the probability on a particular day that the following will occur?
(a) All four machines will break down (Round your answer to ten decimal places.)

Incorrect: Your answer is incorrect.

(b) None of the machines will break down (Round your answer to three decimal places.)

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
All will break down has probability of (1/48)(1/55)(1/75)(1/31)=0.0000001629
none will break down is NOT 1- that bu
(47/48)(54/55)(74/75)(30/31)=0.918