Question 288863: A recent study on teenage pregnancy indicates that 5% of the female population will get pregnant sometime in their teenage years. The study stated that teenage pregnancies occur independently of one another. Suppose 18 teenage women were randomly selected. Find the probability that at least two of these women will get pregnant some time in their teenage years.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A recent study on teenage pregnancy indicates that 5% of the female population will get pregnant sometime in their teenage years.
The study stated that teenage pregnancies occur independently of one another. Suppose 18 teenage women were randomly selected.
Find the probability that at least two of these women will get pregnant some time in their teenage years.
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Binomial Problem with n = 18, p = 0.05:
P(2 <= x <= 18) = 1 - P(0 <= x <= 1) = 1 - binomcdf(18,0.05,1) = 0.0065
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Cheers,
Stan H.
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