Answer: [tex]\frac{3}{20}[/tex]
Step-by-step explanation:
Given: The total number of laser pointers checked = 20
The number of defective laser pointers = 3
We know that the experimental probability[tex]=\frac{\text{number of favorable outcomes}}{\text{ total outcomes}}[/tex]
∴The experimental probability that a laser pointer is defective[tex]=\frac{3}{20}[/tex]
