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June 20th, 2010, 05:23 PM   #1
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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!
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June 20th, 2010, 08:41 PM   #2
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You can easily find a normal distribution calculator on the internet.
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June 21st, 2010, 10:08 AM   #3
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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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June 21st, 2010, 03:49 PM   #4
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Try this, which gives the same results as some others I tried.
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