The probability histogram on the following page represents the number
The probability histogram on the following page represents the number of live births by a mother 50 to 54 years old who had a live birth in 2007.
(a) What is the probability that a randomly selected 50- to 54-year-old mother who had a live birth in 2007 has had her fourth live birth?
(b) What is the probability that a randomly selected 50- to 54-year-old mother who had a live birth in 2007 has had her fourth or fifth live birth?
(c) What is the probability that a randomly selected 50- to 54-year-old mother who had a live birth in 2007 has had her sixth or more live birth?
(d) If a 50- to 54-year-old mother who had a live birth in 2007 is randomly selected, how many live births would you expect the mother to have had?
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