st: using Stata to calulate prob

[P chrisman <peggyc@u.washington.edu>]

Hello List,

I am having trouble using Stata to display probabilities for sample 
distribution. Example: for calculate P(Z<1.96)
I have tried display norm(1.96) which is what is listed in the help 
file, but I keep getting an error that norm is not found and for 
binomial I tried binomial (n,k,p) and it did not recognize the command. 
Any hints?
Peggy
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