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(i) There are 100 bulbs in a box, out of...

(i) There are 100 bulbs in a box, out of which 10 are defective. In a sample of 5 bulbs, what is the probability than no bulb is defective?
(ii) It is known that 5% of the bulbs manufactured in a factored are defective. Find the probability that out of 10 randomly selected bulbs, not more than two are defective.

Text Solution

Verified by Experts

The correct Answer is:
(i) `.^(8)c_(3)(9^5)/(10^8)`
(ii) `1-((9)/(10))^8`
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