Q. 865.0( 1 Vote )

The probability t

Answer :

Total number of person , n=5

Total number of swimmers among total person , r=4

Probability of not swimmer , Q=0.3

So, The probability of swimmer , p=1-Q=0.7

We know, probability distribution P(X=r)=nCr (p)r qn-r

P(X) = nCr

P(X) =

Hence, 5C4 (0.7)4 (0.3)

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