bruce is going to call one person from his contacts at random. he has 25 total contacts. 20 of those…

bruce is going to call one person from his contacts at random. he has 25 total contacts. 20 of those contacts are from his neighborhood. what is p(call a person not from his neighborhood)? if necessary, round your answer to 2 decimal places.

bruce is going to call one person from his contacts at random. he has 25 total contacts. 20 of those contacts are from his neighborhood. what is p(call a person not from his neighborhood)? if necessary, round your answer to 2 decimal places.

Answer

Explanation:

Step1: Find number of non - neighborhood contacts

The total number of contacts is 25 and the number of neighborhood contacts is 20. So the number of non - neighborhood contacts is $25 - 20=5$.

Step2: Calculate the probability

The probability formula is $P(A)=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$. Here, the favorable outcome is calling a non - neighborhood contact. So $P(\text{call a person not from his neighborhood})=\frac{5}{25}= 0.20$.

Answer:

0.20