Question

In a sample of 500 items, 120 are found to be defective. Find the probability that
the item selected at random is
(i) defective (ii) non-defective

Answer 1

Answer:

i) 120/500

ii) 380/500

Step-by-step explanation:

Answer 2

Answer:

ans is (i) = 6/25 ,(ii)= 19/25

Step-by-step explanation:

no.of items n(E)=500

no of defective n(D)=120

no of non defective n(N)=500-120=380

we know that,

(i) The probability of defective= n(D)/n(E)=120/500=6/25

(ii) the probability of non defective= n(N)/n(E)=380/500=19/25

hope it helps you....