Question

At a factory that produces pistons for cars, Machine 1 produced 392 satisfactory pistons and 98 unsatisfactory pistons today. Machine 2 produced 360 satisfactory pistons and 240 unsatisfactory pistons today. Suppose that one piston from Machine 1 and one piston from Machine 2 are chosen at random from today's batch. What is the probability that the piston chosen from Machine 1 is satisfactory and the piston chosen from Machine 2 is unsatisfactory ?

Answer 1

Answer:0.48

Explanation:

Given

Machine 1 Produced 392 satisfactory pistons and 98 unsatisfactory Piston

Machine 2 Produced 360 satisfactory pistons and 240 unsatisfactory Piston

Two balls are selected from batch

Probability of getting Satisfactory Piston From machine 1 is
`(392)/(490)`

Probability of getting Unsatisfactory Piston From machine 2 is
`(360)/(600)`

Probability that the piston chosen from machine 1 is satisfactory and from machine 2 is unsatisfactory
`=(392)/(490)* (360)/(600)`

`=0.8* 0.6=0.480`