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June 20th, 2010, 05:23 PM  #1 
Newbie Joined: Jun 2010 Posts: 2 Thanks: 0  Standard normal random variable
could someone please help me with this question: Find a value of the standard normal random variable Z, called, Z? such that P(z ? Z?) = 0.70 ? Thanks guys! 
June 20th, 2010, 08:41 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 19,985 Thanks: 1853 
You can easily find a normal distribution calculator on the internet.

June 21st, 2010, 10:08 AM  #3 
Newbie Joined: Jun 2010 Posts: 2 Thanks: 0  Re: Standard normal random variable
I couldn't find one. & the once that I came across I wasn't sure if they calculated the question correctly. Could you please recommend one that you're sure works. Thanks 

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normal, random, standard, variable 
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