can anyone please tell me "what conditions must be met in order for a sampling distribution of proportions to be approximated by a normal distribution" I cant seem to understand when I look it up.

Question

mathmale · Answer

I do appreciate your having looked this up.  Would you mind typing out the two conditions you've found?  I don't have a reference in front of me at the moment, other than the Internet, but recall that Sqrt(np(1-p) ) is part of one of the conditions.
n is the number of samples.  What does p represent?

anonymous · Answer

Um I think it is probability, right?

anonymous · Answer

Oh no its population proportion

mathmale · Answer

Have you found an inequality that looks like Sqrt(np(1-p) )?  One of the conditions for assuming a normal distribution is that this quantity is greater than or equal to 10.  Can you confirm or correct this?  Again, i don't have a reference book here with me, so am relying on memory for something I haven't used in 2 years.

mathmale · Answer

While OpenStudy was down, I did a little research and found what I'd thought we needed to decide whether or not we could assume a normal distribution: Please have a look at : http://www.dummies.com/how-to/content/how-to-find-the-sampling-distribution-of-a-sample-.html Just above "Recommends," you'll see that the requirements are $$np \ge 10, and . n(1-p) \ge 10$$

mathmale · Answer

Hope this is helpful.  Unfortunately, I need to get off the 'Net now.  Sorry.

anonymous · Answer

Thanks you and yes you were right! I checked it and its like you said. Again thank you :)