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The sum of of the mean and variance of a...

The sum of of the mean and variance of a binomial distribution is 15 and the sum of their squares is 117. the mean of the distribution is

A

6

B

9

C

3

D

12

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The correct Answer is:
B
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MARVEL PUBLICATION-BERNOULLI TRIALS AND BINOMIAL DISTRIBUTION-MULTIPLE CHOICE QUESTIONS
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