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September 2, 2014

September 2, 2014

Posted by **br0Ok3** on Friday, October 15, 2010 at 1:12am.

- statistics -
**MathGuru**, Friday, October 15, 2010 at 7:40pmUse the normal approximation to the binomial distribution.

Your values are the following:

p = .76, q = 1 - p = .24, x = 104, and n = 119

Find mean and standard deviation.

mean = np = (119)(.76) = ?

sd = √npq = √(119)(.76)(.24) = ?

Once you calculate the mean and standard deviation, find z-score:

z = (x - mean)/sd

Once you have the z-score, check the z-table for the probability. Remember the question is asking the probability of 104 or more.

I hope this will help get you started.

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