anonymous
  • anonymous
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.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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mathmale
  • mathmale
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
  • anonymous
Um I think it is probability, right?
anonymous
  • anonymous
Oh no its population proportion

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mathmale
  • mathmale
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
  • mathmale
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
  • mathmale
Hope this is helpful. Unfortunately, I need to get off the 'Net now. Sorry.
anonymous
  • anonymous
Thanks you and yes you were right! I checked it and its like you said. Again thank you :)

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