The graph of the dscrete probability to the right represents the number of live

Question

The graph of the dscrete probability to the right represents the number of live births by a mother 46 to 51 years old who had a live birth in 2015 30 0.20 Number of Lve h a) What is the probability hat a randomly selected 46- to 51 year-old mother who had a live birth in 2015 has had her fourth live birth? (Type an integer or a decima.) b) What is the probability hat a randomly selected 46- to 51-year-old mother who had a live bith in 2015 has had her fourth or fith lve bith? (Type an integer or a decimal.) c) What is the probability that a randomly selected 46- to 51-year -old mother who had a live birth in 2015 has had her sisth or more live birth? (Type an integer or a decimal ) d) If a 46- to 51-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 dear al place as needed )

Explanation / Answer

a) P( four live birth) = 0.115

b) P( 4 or 5 live birth) = 0.115+0.104 = 0.219

c) P( 6 or more) = 0.018+0.022+0.048 = 0.088

d) Expected value = 1*0.239+2*0.286+3*0.166+4*0.115+5*0.104+6*0.018+7*0.022+8*0.048 = 2.9

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