SOLUTION: 5 of 10 employees of a corporation are men . Suppose that 4 employees are selected at random as delegates for a conference.how many selections will contain : a) exacrly 3 men ? B)

Question 1132285: 5 of 10 employees of a corporation are men . Suppose that 4 employees are selected at random as delegates for a conference.how many selections will contain : a) exacrly 3 men ? B) at least 3 men ? C) what is the probability that a random selection will contain exactly 3 men ?
Answer by ikleyn(52858) (Show Source): You can put this solution on YOUR website!
.

a) exactly 3 men ?

    (select 3 of 5 men) * (select 1 of 5 women) = . = . = 10*5 = 50 different selections.

b) at least 3 men ?

    (select 3 of 5 men) * (select 1 of 5 women) + (select 4 of 5 men) = . +  = 50 + 5 = 55 different selections.

c) what is the probability that a random selection will contain exactly 3 men ?

    P =  =  =  =  = 0.2381 = 23.81% (approximately).

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