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August 21, 2014

August 21, 2014

Posted by **todd** on Friday, February 15, 2008 at 9:13pm.

a)p^=.2

b)p^=0

- statistics -
**MathGuru**, Saturday, February 16, 2008 at 9:08pmLet's try the binomial probability function, which states:

P(x) = (nCx)(p^x)[q^(n-x)]

For a): n = 15; x = 15 * .2 = 3; p = .2; q = 1 - p = 1 - .2 = .8

Therefore: P(3) = (15C3)(.2^3)(.8^12) = ?

Can you take it from here to finish?

For b): n = 15; x = 0; p = .2; q = .8

Therefore: P(0) = (15C0)(.2^0)(.8^15) = ?

Can you take it from here to finish?

I hope this will help.

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