SOLUTION: An introductory psychology class has 9 freshman males, 15 freshman females, 8 sophomore males, and 12 sophomore females. If one student is randomly selected from this class, how wo

Question 799426: An introductory psychology class has 9 freshman males, 15 freshman females, 8 sophomore males, and 12 sophomore females. If one student is randomly selected from this class, how would you calculate the probability of him or her being a sophomore?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
An introductory psychology class has 9 freshman males, 15 freshman females, 8 sophomore males, and 12 sophomore females. If one student is randomly selected from this class, how would you calculate the probability of him or her being a sophomore?
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# of ways to succeed:: 8+12 = 20
# of possible outcomes: 9+15+8+12 = 44
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P(sophomore) = 20/44 = 5/11
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Cheers,
Stan H.
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