Question

Of items produced by a factory, 40% come from line i and 60% from line ii. eight percent of the items produced on line i and 10% of the items produced on line ii are defective. an item is chosen at random. find the probability that it is not defective.

Answer 1

Explanation:

I don't know how is to speak it English correctly but is the teoreme of whole probability

P(A1)=0.08*0.4=0,032 is probability to choose defective item line I

P(A2)=0.1*0.6=0.06 is probability to choose defective item line II

P(B)=P(A1)+P(A2)=0,032+0.06=0.092 probability to choose defective item

P(C)=1-P(B)=0.908 the probability that it is not defective