(%) 61.23 Question Help The graph of the discrete probability to the right repre
ID: 3367002 • Letter: #
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(%) 61.23 Question Help The graph of the discrete probability to the right represents the number of live births by a mother 50 to 55 years old who had a live birth in 2015. Complete parts (a) through (d) below 0.30- 0.25 023 0.167 0.15 0.10 0.05 0114 01 0024 0.033 004 Number of Live Births (a) What is the probability that a randomly selected 50- to 55-year-old mother who had a live birth in 2015 has had her fourth live birth in that year? 0.114 (Type an integer or a decimal.) (b) What is the probability that a randomly selected 50- to 55-year-old mother who had a live birth in 2015 has had her fourth or fifth live birth in that year? 0.22 (Type an integer or a decimal.) (c) What is the probability that a randomly selected 50- to 55-year-old mother who had a live birth in 2015 has had her sixth or more live birth in that year? 0.102 (Type an integer or a decimal.) (d) If a 50-to 55-year-old mother who had a live birth in 2015 is randomly selected, how many live births would you expect the mother to have had? (Round to one decimal place as needed.)Explanation / Answer
(d)
Expected live births
= 1*0.238+2*0.273+3*0.127+4*0.114+5*0.106+6*0.024+7*0.033+8*0.045
= 2.886
~ 2.9
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