Question

The percent distribution of live​ multiple-delivery births​ (three or more​ babies) in a particular year for women 15 to 54 years old is shown in the pie chart. Find each probability.

A pie chart labeled "Number of Multiple Births" is divided into seven sectors with labels and approximate sizes as a percentage of a circle as follows: 15-19, 1.3 percent; 20-24, 6.4 percent; 25-29, 21.4 percent; 30-34, 37.3 percent; 35-39, 24.5 percent; 40-44, 5.3 percent; 45-54, 3.8 percent.
Number of Multiple Births
15-19 1.3%
20-24 6.4%
25-29 21.4%
30-34 37.3%
35-39 24.5%
40-44 5.3%
45-54 3.8%
a. Randomly selecting a mother​ 30-39 years old
b.Randomly selecting a mother not​ 30-39 years old
c.Randomly selecting a mother less than 45 years old
d.Randomly selecting a mother at least 20 years old

Answer 1

Please read the answers below.

Explanation:

A. Randomly selecting a mother​ 30-39 years old

Mother 30 - 39 years old = Mother 30 - 34 % + Mother 35-39%

Mother 30 - 39 years old = 37.3 + 24.5

Mother 30 - 39 years old = 61.8%

B. Randomly selecting a mother not​ 30-39 years old

Mother not 30-39 years old = 100% - Mother 30-39 years old%

Mother not 30-39 years old = 100 - 61.8

Mother not 30-39 years old = 38.2%

C. Randomly selecting a mother less than 45 years old

Mother less than 45 years old = 100% - Mother 45 -54 %

Mother less than 45 years old = 100 - 3.8

Mother less than 45 years old = 96.2%

D. Randomly selecting a mother at least 20 years old

Mother at least 20 years old = 100% - Mother 15 -19%

Mother at least 20 years old = 100% - 1.3%

Mother at least 20 years old = 98.7%