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From a lot of 20 bulbs which include 5 d...

From a lot of 20 bulbs which include 5 defectives, a sample of 3 bulbs is drawn at random one by one with replacement. Find the probability distribution of the number of defective bulbs. Also, find the mean of the distribution.

Text Solution

Verified by Experts

The correct Answer is:
`{:(X,0,1,2,3),(P(X),(27)/(64),(27)/(64),(9)/(64),(1)/(64)):}`
Mean = `(3)/(4)`
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