HSC Science (Computer Science) 12th Board ExamMaharashtra State Board
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If X ~ B (N, P) and E(X) = 12, Var(X) = 4, Then the Value of N Is__ - HSC Science (Computer Science) 12th Board Exam - Mathematics and Statistics

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Question

If X ~ B (n, p) and E(X) = 12, Var(X) = 4, then the value of n is _______

(A) 3

(B) 48

(C) 18

(D) 36

Solution

E(X) = np and Var (X) = npq

  Is there an error in this question or solution?

APPEARS IN

 2012-2013 (October) (with solutions)
Question 4.1.3 | 2.00 marks

Video TutorialsVIEW ALL [1]

Solution If X ~ B (N, P) and E(X) = 12, Var(X) = 4, Then the Value of N Is__ Concept: Bernoulli Trials and Binomial Distribution - Calculation of Probabilities.
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