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Asked Feb 4, 2020
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Prove that the mean and variance of a binomially distributed random variable are respectively:

  mu = np and σ= np (1-p)




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Step 1

Expected value:

The expected value is given below:

Probability homework question answer, step 1, image 1
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Step 2

The variance is calculate...

Probability homework question answer, step 2, image 1
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