if you select 5 students from a sample size of 60 (there are 30 females and...
Homework Answers
x items are selected from n items by nCx ways.
nCx = n! / [ ( n - x)! * x! ]
P(At least 3 female) = P(3 female and 2 male) + P(4 female and a male) + P(5 female)
= [ 30C3 * 30C2 / 60C5 ] + [ 30C4 * 30C1 / 60C5 ] + [ 30C5 / 60C5 ]
= 0.50
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