Conditional probability

#1
Hello, I'm having an issue with a problem. I just have no clue how to solve it.

A machine part may be selected from any of three manufacturers
with probabilities p1 = 0.25, p2 = 0.50, and p3 = 0.25. The probabilities that it will
function properly during a specified period of time are 0.2, 0.3, and 0.4, respectively,
for the three manufacturers. Determine the probability that a randomly chosen
machine part will function properly for the specified time period.

Is it conditional probability related?

Thank yoU!:yup:
 

hlsmith

Less is more. Stay pure. Stay poor.
#2
Definitely. Probability selected and works. Probability it works is conditional on which manufacture made it.
 

Dason

Ambassador to the humans
#3
Definitely. Probability selected and works. Probability it works is conditional on which manufacture made it.
Well you need to use those conditional probabilities to get the final answer the probability in question isn't a conditional probability.