Question

you check 20 laser pointers at random. 3 of the laser pointers are defective what is the experimental probability that a laser pointer is defective

Answer 1

Answer:
`(3)/(20)`

Explanation:

Given: The total number of laser pointers checked = 20

The number of defective laser pointers = 3

We know that the experimental probability
`=\frac{\text{number of favorable outcomes}}{\text{ total outcomes}}`

∴The experimental probability that a laser pointer is defective
`=(3)/(20)`