Two parts A and B of a machine is manufactured by a firm. Out of 100 A...
probability of getting good machine part from A = 88/100
probability of getting good machine part from B = 92/100
P(correction) = (88/100)(92/100)
= 506/625
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Two parts A and B of a machine is manufactured by a firm. Out of 100 A...
It's just case of combined probability as the probability of getting good machine part form A= 88/100 and from B =92/100 and by combining each ie 88/100*92/100=8096/10000 or 0.8096 or by simplifying we get 506/625...
Two parts A and B of a machine is manufactured by a firm. Out of 100 A...
To solve this problem, we can use the concept of conditional probability. We need to find the probability that both part A and part B are free from defects.
Let's denote the event "part A is free from defects" as A, and the event "part B is free from defects" as B.
Given information:
P(A being defective) = 12/100 = 3/25
P(B being defective) = 8/100 = 2/25
To find the probability that both parts are free from defects, we can use the formula for conditional probability:
P(A and B) = P(A) * P(B|A)
where P(B|A) is the probability of B given that A has occurred.
From the given information, we know that out of 100 parts A, 12 are likely to be defective. So, the probability that part A is free from defects is:
P(A) = 1 - P(A being defective) = 1 - 3/25 = 22/25
Now, we need to find the probability that part B is free from defects given that part A is free from defects. Since the two events are independent (one part being defective does not affect the other part), the probability of part B being free from defects is the same regardless of whether part A is defective or not. So, we can directly use the given information:
P(B|A) = 1 - P(B being defective) = 1 - 2/25 = 23/25
Calculating the probability that both parts are free from defects:
P(A and B) = P(A) * P(B|A) = (22/25) * (23/25) = 506/625
Therefore, the probability that a machine manufactured by the firm is free from any defect is 506/625.
Hence, the correct answer is option D) 506/625.
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