RD Sharma - Mathematics (Volume 2)

Book: RD Sharma - Mathematics (Volume 2)

Chapter: 33. Binomial Distribution

Subject: Maths - Class 12th

Q. No. 5 of Exercise 33.2

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5

Determine the binomial distribution whose mean is 20 and variance 16.

Let X denote the variance with parameters n and p


p + q = 1 q = 1 - p


Given, mean = np = 20 and variance = npq = 16


npq = 16


20q = 16





Now, np = 20



n = 100


n = 100 and


The required binomial distribution is given by,



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