Here is the question:

Link: http://i41.tinypic.com/69opqt.png

I need help figuring out what is the success rate of this. Thanks for your help.

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- Jun 4th 2009, 04:41 PMkrzyriceHow to figure out binominal distribution
**Here is the question:**

Link: http://i41.tinypic.com/69opqt.png

I need help figuring out what is the success rate of this. Thanks for your help. - Jun 4th 2009, 04:57 PMpickslides
$\displaystyle

P(A\cup B) = P(A)+P(B) = \frac{1}{4} + \frac{1}{8} = \frac{2}{8} + \frac{1}{8} = \frac{3}{8}

$

(Rofl)(Rofl)(Rofl) - Jun 4th 2009, 05:12 PMkrzyrice
Thank you for help pickslides.

However, I am now stuck on figuring out part a)

It tells you it is spun once.

So is the answer 1C1 x (.375)^1 - Jun 4th 2009, 05:22 PMpickslides
My answer is correct for 1 trial.

Using the binomial theorem

$\displaystyle

P(A \cup B) = \binom{1}{1}\left(\frac{3}{8}\right)^1\left(\frac{ 5}{8}\right)^0 = \frac{3}{8}

$ - Jun 4th 2009, 05:44 PMkrzyrice
Excellent explanation. Thanks!