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July 26th, 2013, 06:33 AM  #1 
Newbie Joined: Feb 2012 Posts: 3 Thanks: 0  Please help me remember statistics
My wife is taking statistics and she did not do well on her quiz so I'd like to help her with some of the questions she got wrong but I do not remember that much about statistics. Screen captures of 3 of the questions are below. Can someone give me a refresher on how to calculate Z score (I thought you used a table?) and normal distribution and binomial distribution relate and really just how to do that second question. Thanks for reading. 

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