Chapter 12.7, Problem 4P

To determine

To find: The probability that the skateboard selected at random has no effect and write the probability as the percent.

Answer to Problem 4P

The required probability is $98\%$ .

Explanation of Solution

Given:

The number of skate board inspected is 2500.

The number of skateboard with no defect is $2450$ .

Calculation:

Consider the formula for the probability of the event is of the form,

  $P=\frac{\text{number}\text{of}\text{favorable}\text{outcomes}}{\text{number}\text{of}\text{possible}\text{outcomes}}$

Then, the probability for the skateboard with no defect is,

  $\begin{array}{c}P\left(\text{no}\text{defect}\right)=\frac{2450}{2500}\\ =0.98\\ =98\%\end{array}$