The mean and variance of binomial distribution B (x, n, p) are 4 and – McqOptions

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1.	The mean and variance of binomial distribution B (x, n, p) are 4 and \(\dfrac{4}{3}\) respectively. What is the probability of getting 2 successes?
A.	\(\dfrac{1}{243}\)
B.	\(\dfrac{20}{243}\)
C.	\(\dfrac{20}{423}\)
D.	\(\dfrac{20}{342}\)
Answer» C. \(\dfrac{20}{423}\)

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