SOLUTION: Find the variance of the binomial distribution with the given values. n = 50 p = 0.9

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Question 317479: Find the variance of the binomial distribution with the given values.

n = 50
p = 0.9

Found 2 solutions by JBarnum, MathTherapy:
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
where is the binomial distribution? there are no equations. n=50 and p=.9 means nothing without some kind of equation. might aswell say z=459 and Q=.2345

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!
Find the variance of the binomial distribution with the given values.

n = 50
p = 0.9

Since p, or probability of success is 0.9, then q, or probability of failure = .1 (1.0 - 0.9)

Now we have:
n = 50
p = 0.9
q = 0.1

Standard Deviation (SD) = sqrt%28npq%29

Variance = SD%5E2, or %28sqrt%28npq%29%29%5E2 = npq, or n*p*q = 50(.9)(.1) = highlight_green%284.5%29