3 years ago

A binomial probability has p=.20 and n=100, what are the mean and standard deviation?

Mathematics

1 answer:

pychu [463]3 years ago

4 0

Mean: $np=100\times0.20=20$

Standard deviation: $\sqrt{np(1-p)}=\sqrt{100\times0.20\times0.80}=4$

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