Letters to the Editor...
Probability device

Where can I get the "probability device"
for demonstrating a normal distribution
curve(or a similar one)that was described
Vol.2, No. 5, May 2002. I have seen others
but I don't know where to get any!
Thanks.
Michael Meredith,

Michael Meredith, mmeredith1@yahoo.com,
5/28/03

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