Question

The graph of the discrete probability to the right represents the number of live births by a mother 48 to 52 years old who had a live birth in 2015. Complete parts​ (a) through​ (d) below.

0 1 2 3 4 5 6 7 8 0.00 0.05 0.10 0.15 0.20 0.25 0.30 Number of Live Births Probability font size decreased by 2 0.233 font size decreased by 2 0.284 font size decreased by 2 0.165 font size decreased by 2 0.114 font size decreased by 2 0.096 font size decreased by 2 0.025 font size decreased by 2 0.038 font size decreased by 2 0.045 A histogram with a horizontal axis labeled “Child” from 1 to 8 in intervals of 1 and a vertical axis labeled "Probability" from 0 to 0.30 in intervals of 0.05 has eight vertical bars of width 1, centered along the horizontal axis labels, with labeled heights. The heights of the vertical bars are as follows, with the horizontal axis label listed first and the bar height listed second: 1, 0.233; 2, 0.284; 3, 0.165; 4, 0.114; 5, 0.096; 6, 0.025; 7, 0.038; 8, 0.045. ​(a) What is the probability that a randomly selected 48​- to 52​-year-old mother who had a live birth in 2015 has had her fourth live birth in that​ year? nothing ​(Type an integer or a​ decimal.) ​(b) What is the probability that a randomly selected 48​- to 52​-year-old mother who had a live birth in 2015 has had her fourth or fifth live birth in that​ year? nothing ​(Type an integer or a​ decimal.) ​(c) What is the probability that a randomly selected 48​- to 52​-year-old mother who had a live birth in 2015 has had her sixth or more live birth in that​ year? nothing ​(Type an integer or a​ decimal.) ​(d) If a 48​- to 52​-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? nothing ​(Round to one decimal place as​ needed.)

Answer 1