Question

A computer manufacturer is performing a quality check to make sure the computers’ sound cards are working correctly. The plant manager tested 1,000 computers on Monday and found that 4 had defective sound cards. What is the experimental probability of a computer having a bad sound card?

Answer 1

Answer:

The answer is :1/250

hope this helps!

Answer 2

we need to find the probability of bad sound cards.

we are having 1000 computers so 1000 sound card will be there.

manager found that 4 sounds are defective out of 1000 sound cards.

$P(D)$ of defective sound cards=$n(D)/n(s)=4/1000=0.004$

we know that 1 is the total probability.out of 0.004 is the failure.