SOLUTION: The probability of passing the math class of Professor Jones is 62%, the probability of passing Professor Smith's class is 34%, and the probability of passing both is 30.
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-> SOLUTION: The probability of passing the math class of Professor Jones is 62%, the probability of passing Professor Smith's class is 34%, and the probability of passing both is 30.
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Question 1152570: The probability of passing the math class of Professor Jones is 62%, the probability of passing Professor Smith's class is 34%, and the probability of passing both is 30.
What is the probability of passing one or the other? Found 2 solutions by VFBundy, ikleyn:Answer by VFBundy(438) (Show Source):
You can put this solution on YOUR website! A = prob. of passing Jones' class
B = prob. of passing Smith's class
P(A or B) = P(A) + P(B) - P(A)*P(B)
P(A or B) = 0.62 + 0.34 - 0.30
P(A or B) = 0.66
A = prob. of passing Jones' class
B = prob. of passing Smith's class
P(A or B) = P(A) + P(B) - P(A and B)
P(A or B) = 0.62 + 0.34 - 0.30
P(A or B) = 0.66
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Notice the difference between my solution and the solution by the tutor @VBFBundy in the 3-rd line.
