Question

E.J. calls people at random to conduct a survey. So far, 40 calls have beenanswered and 120 calls have not been answered. What is the approximateprobability that someone answers the next call he makes?

Answer 1

C. 0.25

Step-by-step explanation:

The number of calls answered = 40

The number of calls not answered = 120

`\begin{gathered} \text{Total number of calls so far=120+40} \\ =160 \end{gathered}`

The approximate probability that someone answers the next call he makes will be:

`\begin{gathered} =\frac{\text{Number of calls answered}}{\text{Total number of calls}} \\ =(40)/(160) \\ =(1)/(4) \\ =0.25 \end{gathered}`

The correct choice is C.