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Basic Question 2 of 7

In a certain electric motor factory, production lines 1, 2, and 3 produce 10%, 40%, and 50%, respectively, of the total output. Of their respective outputs, 5%, 3%, and 1% are defective. An electric motor is selected at random. What is the probability that the motor is defective?

A. 0.022
B. 0.090
C. 0.978

User Contributed Comments 3

User Comment
Amrokken Straighforward 1
ANBobby Does that add up correctly?
ANBobby oops nevermind
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You have a wonderful website and definitely should take some credit for your members' outstanding grades.
Colin Sampaleanu

Colin Sampaleanu

Learning Outcome Statements

formulate an investment problem as a probability tree and explain the use of conditional expectations in investment application

CFA® 2024 Level I Curriculum, Volume 1, Module 4.