A bin contains 71 light bulbs, of which 9 are defective. If 6 light bulbs are randomly selected from the bin without replacement of the selected bulbs, what is the probability that all of the selected bulbs are good?
1 Answer
Explanation:
There are 71 light bulbs in the bin of which 9 are defective.
So 62 of them are good.
6 bulbs are selected and we want all of them to be good.
So, the good bulbs must come from the 62 bulbs and this is possible in
==================
This Problem is to be solved using Binomial Distribution.
If a ball is taken randomly from the bin the ball being defective is
The ball not being defective is
The desired event is not being defective.
Let
We expect