Chapter 13, Problem 23SGR

To determine

If 72% of people in United States like pizza and 3 people are randomly selected then find the probability that all 3 like pizza.

Answer to Problem 23SGR

The probability that all 3 like pizza is $0.373$ .

Explanation of Solution

Given information: It is given that 72% people like pizza.

Calculation: Since 72% of people like pizza which means 0.72 is the probability that people like pizza. Therefore when 3 people are randomly selected then the probability that all 3 like pizza is evaluated as,

  $\begin{array}{c}P\left(\text{all 3 like pizza}\right)=\left(0.72\right)\left(0.72\right)\left(0.72\right)\\ =0.373\end{array}$

Hence the probability that all 3 like pizza is $0.373$ .