Asked by iris
company A has 110 employed, company B has 750 employed and company C has 250 employed. Compute the probability that an employee selected at random comes from company A or B.
Answers
Answered by
MathMate
Size of set A = |A| = 110,
similarly |B|=750, |C|=250
Size of Ω, sample space, S = |A|+|B|+|C|=1110
Random selection from equi-probability sample would be
P(A or B)=P(A)+P(B)=(|A|+|B|)/S
similarly |B|=750, |C|=250
Size of Ω, sample space, S = |A|+|B|+|C|=1110
Random selection from equi-probability sample would be
P(A or B)=P(A)+P(B)=(|A|+|B|)/S
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