[pstricks] Drawing Normal Distribution Curves

[PKohli at smc.nopworld.com]

Hi:

I have been using pstricks for some time. I am interested in drawing normal
distribution curves with different means and variances along the same axis
(\overbar{x}). That means that  I should be able to draw these curves side
by side (e.g., a normal curve with a mean of zero and a variance of 3, and
a normal curve with a mean of 1, and variance of 4, along the x-axis
representing the means). I would also like to be able to shade different
confidence interval levels. I was wondering if there was an easier way to
plot these curves, say by specifiying the probability distributions f(x),
rather than plotting these curves point by point (which I tried to do and
was too painful). I would appreciate any help.

Regards,
Pankaj

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