sign test

[Micha Levi <micha@c255.ucsf.edu>]

Hello all,

Could someone send
me an Splus code for
paired sign test.
In particular, I
have a vector with
the signs of the
differences between
paired observations.
I would like to get
the p value under
the null hypothesis
that the probability
of getting a
negative sign is
equal to the
probability of
getting a positive
sign.

Thanks in advance,

Micha Levi