What are the mean and standard deviation of a binomial

jamessinatraaa 2022-01-19 Answered
What are the mean and standard deviation of a binomial probability distribution with n=9 and p=1132?
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Expert Answer

Alex Sheppard
Answered 2022-01-19 Author has 36 answers
mean =np
s.d.=npq
Explanation:
Using the formula for mean and s.d. above ...
mean=9×1132=99323.09
s.d.=9×1132×(11132)1.425
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twineg4
Answered 2022-01-20 Author has 33 answers
Formula:
μ=np
=91132
=3.06
σ2=np(1p)
=91132(11132)
=2.01
And finally, taking square root to the variance we get that the population standard deviation is:
σ=σ2=2.01=1.42
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