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In a local college, 20% of the math majors are women. Ten math majors are chosen at random. How do you find the mean and the variance?

1 Answer

Feb 9, 2018

Mean, #\mu = n*p = 10*0.2 = 2#

Variance, #s = n*p*(1-p) = 10*0.2*(1-0.2) = 1.6#

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