Copykwik has four photocopy machines: A, B, C and D. The probability that a given machine will break down on a particular day is P(A) = 1/50 P(B) = 1/60 P(C) = 1/75 P(D) = 1/40. Assuming independence, what is the probability that: (a) All four machines will break down? (What is this in symbols?) (b) None of the machines will break down? (c) Exactly one machine will break down?

Copykwik has four photocopy machines: A, B, C and D. The probability that a given machine will break down on a particular day is P(A) = 1/50 P(B) = 1/60 P(C) = 1/75 P(D) = 1/40. Assuming independence, what is the probability that: (a) All four machines will break down? (What is this in symbols?) (b) None of the machines will break down? (c) Exactly one machine will break down?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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