AP EAMCET Engineering 2018 Apr 24 Shift 1 Paper

Let events that production is done by machine A is E1, the production done by machine B is E2, the production done by machine C is E3. The event that product being defective is E The probabilities are
P(E1)=

20

100

,P(E2)=

30

100

, P(E3)=

50

100

Probability,
Machine A has defective production P(

E

E1

)=

5

100

Machine B has defective production P(

E

E2

)=

3

100

Machine C has defective production P(

E

E3

)=

2

100

An item being selected and found defective, then the probability that it is produced by machine B is
=

9

29