SOLUTION: Please help! A college professor has been studying the relationship between the attendance habits of his students and the grades they earn in his courses. A breakdown of 200

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Question 868200: Please help!
A college professor has been studying the relationship between the attendance habits of his students and the grades they earn in his courses.
A breakdown of 200 of his students revealed the following:
Attended Regularly---160 140 Passed and 20 Failed
Attended Sometimes—40 30 Passed and 10 Failed
Passed=170 and Failed=30
Assume that a student is chosen at random.
What is the probability that the student passed the course, given that the students attended class sometimes.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi                           pass    F

Attended Regularly   160     140     20		

Attended Sometimes    40      30     10

                     200     170     30

P(pass|sometimes) = +%2830%2F200%29%2F%2840%2F200%29