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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

1 Answer

3 votes

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)

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