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April 18, 2014

April 18, 2014

Posted by **cm** on Monday, May 7, 2012 at 8:23pm.

- statistics -
**MathGuru**, Tuesday, May 8, 2012 at 4:54pmFor the first part:

You can use a binomial probability table, or calculate by hand using the following formula: P(x) = (nCx)(p^x)[q^(n-x)]

For the second part:

Use the binomial approximation to a normal distribution.

mean = np = 50 * .10 = ?

standard deviation = √npq = (√(50 * .10 * .90) = ?

Note: q = 1 - p

Finish the calculation.

I hope these few hints will help.

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