The graph of the discrete 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. Complete parts (a) through (d) below.

0123456780.000.050.100.150.200.250.30Number of Live BirthsProbability 0.236 0.273 0.167 0.109 0.101 0.028 0.033 0.053 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, 0.236; 2, 0.273; 3, 0.167; 4, 0.109; 5, 0.101; 6, 0.028; 7, 0.033; 8, 0.053.

Question content area bottomPart 1

(a)What is the probability that a randomly selected

46- to

51-year-old mother who had a live birth in

2015 has had her fourth live birth in that year?