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If the mean of a binomial distribution i...

If the mean of a binomial distribution is 20 and its standard deviation is 4, find `p` .

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Standard Deviation `= 4`
Variation `= `(S.D)`^2` `(4)^2 = 16`
`variance = n*p*q`
Here,
n is number of trials
p is probability of success
q is probability of failure
mean `= n*p = 20`
...
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