Q. A firm found that 85% of newly hired people met job-related expectations, while 15% did not.
Question:
Q. A firm found that 85% of newly hired people met job-related expectations, while 15% did
not. Of those that met expectations, 90% had more than 3 years of experience, while 40% of
those who did not meet expectations had more than 3 years of experience. In your analysis
of this situation below use the notation E to represent the event that an employee met jobrelated expectations and S to represent the event that the person had more than 3 years of experience.
i. Determine the probability that a newly hired person does not have more than 3 years of
experience given they met expectations, that isP(ScE).
ii. Represent the situation described as a probability tree with outcomes, marginal
probabilities, conditional probabilities and joint probabilities labelled.