Question

The table shows the​ distribution, by age and​ gender, of the 30.6 million people in a certain region who live alone. Use the data in the table to find the probability that a randomly selected person in the region is a woman in the 18dash24 age range living alone.
Ages 18dash24
Ages 25dash34
Ages 35dash44
Ages 45dash64
Ages 65dash74
Ages greater than or equals75
Total
Man
0.9
2.3
2.1
4.6
1.8
1.2
12.9
Woman
0.7
1.8
1.8
6.0
2.3
5.1
17.7
Total
1.6
4.1
3.9
10.6
4.1
6.3
30.6

Answer 1

Number of women age 18–24 living alone = 0.7 million. Total people who live alone = 30.6 million.

Probability = 0.7 / 30.6 ≈ 0.0229 ≈ 2.29%.