in a batch of 280 water purifiers, 12 were found to be defective. what is the probability that a water purifier chosen at random

Question

Volgvan

3 years ago

8

in a batch of 280 water purifiers, 12 were found to be defective. what is the probability that a water purifier chosen at random

will be defective? write the probability as a percent

Mathematics

1 answer:

Ksivusya [100] · Answer 1 · 2022-06-10T07:09:20+03:00

Ksivusya [100]3 years ago

5 0

Batch size = 280 purifiers
Defectives = 12 purifiers

Then,
P(defective) = defectives/batch size = 12/280 =3/70

As a percentage:
P(defective) = (3/70)*100 = 4.29%