What are the mean and standard deviation of a binomial

Jason Yuhas

Jason Yuhas

Answered question

2022-01-19

What are the mean and standard deviation of a binomial probability distribution with n = 88 and p=2432?

Answer & Explanation

Serita Dewitt

Serita Dewitt

Beginner2022-01-19Added 41 answers

Explanation:
for a Binomial distribution
XB(n,p)
in this case
XB(88,2432)
or XB(88,34)
mean E(X)=np
in this case
E(X)=88×34=66
standard deviation =variance
sd=np(1p)
sd=66×14
sd=22
yotaniwc

yotaniwc

Beginner2022-01-20Added 34 answers

2432=34
μ=np
=8834
=66
σ2=np(1p)
=8834(134)
=16.5
σ=σ2=16.5=4.06

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