Question

A bicycle factory runs 2 assembly lines, A and B. 97% of line A's products pass inspection and 89% of line B's products pass inspection. 60% of the factory's bikes come off assembly line B and the rest come off line A. Find the probability that one of the factory's bikes did not pass inspection and came off assembly line B.

Answer 1

@jim_thompson5910

Answer 2

one sec, I'm drawing out a tree

Answer 3

okay :)

Answer 4

the 3% is from the fact that 100% - 97% = 3%

the 11% is from the fact that 100% - 89% = 11%

Answer 5

if we want a bike that is both bike B and it fails inspection, then we focus on this path