Question

A computer has three mutually independent components: a CPU, a MONITOR, and a KEYBOARD. The probability...

A computer has three mutually independent components: a CPU, a MONITOR, and a KEYBOARD. The probability of failure within six years for these components is given as 0.50, 0.20, and 0.10 respectively. What is the probability that the computer is fully functioning.

Homework Answers

Answer #1

Probability that CPU have not failed in 6 years = 1 - 0.5 = 0.5

Probability that MONITOR have not failed in 6 years = 1 - 0.2 = 0.8

Probability that KEYBOARD have not failed in 6 years = 1 - 0.1 = 0.9

Probability that the computer is fully functioning = probability of failure that none of the components failed

= Probability that CPU have not failed in 6 years * Probability that MONITOR have not failed in 6 years * Probability that KEYBOARD have not failed in 6 years

= 0.5 * 0.8 * 0.9

= 0.36

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