Question 2. Consider the following natality statistics for the U. S. population in 1992. According 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:
Age (years) Probability
< 15 0.003
15 – 19 0.124
20 – 24 0.263
25 – 29 0.290
30 – 34 0.220
35 – 39 0.085
40 – 44 0.014
45 – 49 0.001

a. (Appears as Question #4 in Blackboard) What is the probability that a woman giving birth in 1992
was 40 or older?
b. (Appears as Question #5 in Blackboard) Given that the mother of a particular child was under 30
years of age, what is the probability that she was not yet 20 years of age?
c. (Appears as Question #6 in Blackboard) Given that the mother was 35 years of age or older,
what is the probability that she was under 40 years of age?