Chapter 12.7, Problem 24P

Hank usually makes 11 out of every 20 of his free throws. What is the probability that he will miss his next free throw?

To determine

Find the probability that Hank will his next free throw.

Answer to Problem 24P

  $\frac{9}{20}=45\%$

Explanation of Solution

Given:

Hank usually makes 11 out of every 20 of his free throws.

Formula Used :

  $\text{P(E) = }\frac{\text{number of favourable outcomes of E}}{\text{total number of outcomes}}$

Calculation:

Number of favourable outcomes of missing the free throws = 20 − 11 = 9

Total number of outcomes = 20

  $P(\text{miss free throw)=}\frac{\text{favourable outcomes}}{total\text{ number of outcomes}}=\frac{9}{20}=45\%$