Of 400 cars coming off an assembly line , 17 are found to have defective brakes Calculate the relative frequency of a car having defective brakes. Give the answer as a percentage.

To calculate the relative frequency of a car having defective brakes, you need to divide the number of cars with defective brakes by the total number of cars and then multiply by 100 to convert it to a percentage.<br /><br />Here's the calculation:<br /><br />\[ \text{Relative Frequency} = \left( \frac{\text{Number of cars with defective brakes}}{\text{Total number of cars}} \right) \times 100 \]<br /><br />Plugging in the numbers:<br /><br />\[ \text{Relative Frequency} = \left( \frac{17}{400} \right) \times 100 \]<br /><br />\[ \text{Relative Frequency} = 0.0425 \times 100 \]<br /><br />\[ \text{Relative Frequency} = 4.25\% \]<br /><br />So, the relative frequency of a car having defective brakes is 4.25%.