JNU PROBABILITY QSTN

[tania]

Among 25 articles, nine are defective , six have minor defects and 3 major defects. The probability that, if a selected article is defective, then the defect is major:

1. 1/3
2. 0.25
3. 0.24
4. 0.08

PLEASE SHOW THE SOLUTION
THANKS.

[unsullised]

3/9 = 1/3

Since you've selected a defected article, your new universe has a sample space of 9, out of which major defects are equal to three.

[tania]

thanks ! got it.