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In a binomial distribution, if n=20 ,\ q...

In a binomial distribution, if `n=20 ,\ q=0. 75 ,`then write its mean.

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Verified by Experts

Given that
`n=20, q=0.75`
`Rightarrow p=1-q=0.25`
Mean `={np}=20(0.25)=5`
Thus, mean` =5`
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