Question

A foreman for an injection-molding firm admits that on 48% of his shifts, he forgets to shut off the injection machine on his line. This causes the machine to overheat, increasing the probability that a defective molding will be produced during the early morning run from 3% to 21%. The plant manager randomly selects a molding from the early morning run and discovers it is defective. What is the probability that the foreman forgot to shut off the machine the previous night?

Probability =

Answer 1

@dan815

Answer 2

@ganeshie8

Answer 3

try making a tree diagram from the given info