Q. 45.0( 1 Vote )
Find the binomial distribution when the sum of its mean and variance for 5 trials is 4.8.
Answer :
Given that,
n = 5
Also, Mean+ Variance = 4.8
⇒np + npq = 4.8
⇒np(1+q) = 4.8
⇒5p(1+q) = 4.8
⇒5(1 - q)(1+q) = 4.8 [Since, p + q = 1]
⇒5(1 - q2) = 4.8
The required binomial distribution is given by,
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