1.

Given that X ~ B(n = 10, p). If E(X) = 8 then the value of p is(A) 0.6 (B) 0.7 (C) 0.8 (D) 0.4

Answer»

(C) 0.8

n = 10, E(X) = 8      ....(given) 

But, E(X) = np 

∴ 8 = 10 (p)

∴ p = \(\frac{8}{10}=\frac{4}{5} = 0.8\)



Discussion

No Comment Found

Related InterviewSolutions