A binomial random variable with n = 1000 and p =3/4 has a variance of what

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A binomial random variable with n = 1000 and p =3/4 has a variance of what

[From: ] [author: ] [Date: 11-12-08] [Hit: ]

Studying for a math quiz.

Variance = n*p*(1-p)
= 1000*(3/4)*(1-3/4)
= 1000*3/4*1/4
= 187.5

q = 1 - 3/4 = 1/4

Variance = n*p*q = 1000*(3/4)*(1/4) = 187.5

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