Question

A study on the age distribution of students at a community college gave the following table:

What must be the probability that a randomly selected student at the college is between 18 and 20 years old?

Short answer

The probability is$0.19$.

Step-by-step solution

Step 1. Given information

The distribution table is:

Step 2. To probability of randomly selected student at the college is between 18 and 20 years old.

Let, the probability of the group 18-20 is$x$.

Since total probability is 1.

$$\begin{gathered} 1=0.03+x+0.23+0.29+0.25+0.01 \\ 1=0.81+x \\ x=1-0.81 \\ x=0.19 \end{gathered}$$