23. Number of Births The graph of the discrete probability distribution below represents the number of live births by a mother 50-54 years old who had a live birth in 2013. Source: National Vital Statistics Report. Number of Live Births, 50-to 54-Year-Old Mother 0.4 0.352 0.35 0.3 0.262 0.25 0.2 0.15 0.124 0.096 0.1 0.047 0.054 0.05 0.018 0.020 0.016 0.011 8 9 10 5 6 7 0 1 2 3 4 Child Number (a) What is the probability that a randomly selected 50- to 54-year-old mother who had a live birth in 2013 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 2013 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 2013 has had her sixth or more live birth? Probability

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