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Consider the following natality statistics for the U.S. population in 1992 [16],

ID: 3202724 • Letter: C

Question

Consider the following natality statistics for the U.S. population in 1992 [16], Ac. cording to these data, the probabilities that a randomly selected woman who gaVe birth in 1992 was in each of the following age groups are as follows: (a) What is the probability that a woman who gave birth in 1992 was 24 years of age or younger? (b) What is the probability that she was 40 or older? (c) Given that the mother of a particular child was under 30 years of age. what is the probability that she was not yet 20? (d) Given that the mother was 35 years of age or older, what is the probability that she was under 40?

Explanation / Answer

A. P(x<=24)=0.003+0.124+0.263=0.39

B. P(x>=40)=0.014+0.001=0.015

C. 0.290+0.263=0.553

D. 0.085