Mathematics, 27.02.2020 19:04, GodlyGamer8239

Before the distribution of certain statistical software, every fourth compact disk (CD) is tested for accuracy. The testing process consists of running four independent programs and checking the results. The failure rates for the four testing programs are, respectively, 0.01, 0.03, 0.02, and 0.01.
(a) What is the probability that a to-be-tested CD fails any test?
(b) Given that a CD was tested, what is the probability that it failed program 2 or 3?
(c) In a sample of 100, how many CDs would you expect to be rejected?

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Before the distribution of certain statistical software, every fourth compact disk (CD) is tested fo...