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GATE | GATE-CS-2017 (Set 2) | Question 59

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(A) Nβ(1-β)
(B) Nβ
(C) N((1-β))
(D) Not expressible in terms of N and β


Answer: (B)

Explanation: gy(z) = ((1- β) + βz)N

Expanding  gy(z) we’ll get binomial distribution  with n=N and p = β

Mean of binomial distribution is E[Y] = n*p = Nβ which seems to be the only correct option here.

Therefore, option B

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Last Updated : 28 Jun, 2021
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