A class contain 10 men and 20 women of which half the men and half the women have brown eyes. Find the probability of P that a person chosen at random is a man or has brown eyes.
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total answers (1)
total answers (1)
Statistics
Let A={person is a man} , B={person has brown eyes}
need an explanation for this answer? contact us directly to get an explanation for this answerWe seek P(A∪B)
P(A)=10/30=1/3 ,P(B)=15/30=1/2
Thus P(A∪B)=P(A)+P(B)-P(A∩B)
=1/3+1/2-1/6=4/6=2/3