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CBSE Class 12-science Answered

Four rotten oranges  are accidently mixed with 16 good ones . three oranges are drawn at random from the mixed lot . let X be the no of rotten oranges drawn . Find mean and variance of X
Asked by haroonrashidgkp | 07 Nov, 2018, 09:16: PM
Expert Answer
Accroding to the question,
X can take values 0, 1, 2, 3
Also, total number of eggs = 4 + 16 = 20
Hence the probability distribution is
 
Now you can find Mean and variance of X.
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