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CSE - Questions and solutions set-7

Computer science and engineering(CSE) - Question & solution set-7
Question:-
Option (A)
pq + (1- p)(1- q)
Option (B)
(1 –q) p
Option (C)
(1- p) q
Option (D)
pq
Correct Option:
A
Question Solution:
Given, the probability of faulty assembly of the computers=p

\ The probability of non faulty assembly of the computers=1-p

The probability of correct result for any computer in testing process=q
\ The probability of correct result for any computer in testing process=1-q

The probability of a computer being declared faulty=

probability of being faulty and probability of being declared or

probability of not being faulty and probability of declaring incorrectly.

= pq+(1-p)(1-q)