SOLUTION: in a certain hospital, maternity, it has been observed that the probability of getting a baby boy is 0.32. if 10 expectant ladies are observed, find the probability that,
i) exact
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i) exact
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Question 465155: in a certain hospital, maternity, it has been observed that the probability of getting a baby boy is 0.32. if 10 expectant ladies are observed, find the probability that,
i) exactly three of them are males
ii)at least 9 are females
iii) none is a boy Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! p=0.32, q=0.68, n=10
i)
nCr=10C3=120 coefficient
120p^3q^7
=.2644
.
ii)
10pq^9+q^10
=.1206
.
iii)
q^10
=.0211
.
Ed
