Electric circuit boards are rated excellent acceptable or

Last updated: 3/10/2023

Electric circuit boards are rated excellent acceptable or unacceptable Suppose that 30 of boards are excellent 60 are acceptable and 10 are unacceptable Further suppose that 10 of excellent boards fail 20 of acceptable boards fail and 90 of unacceptable boards fail a What is the probability that a board fails b Given that a board fails what is the probability that it was rated excellent