RANEXP: Returns a random variate from an exponential distribution.
RANGAM: Returns a random variate from a gamma distribution.
RANNOR: Returns a random variate from a normal distribution.
RANPOI: Returns a random variate from a Poisson distribution.
RANTBL: Returns a random variate from a tabled probability distribution.
RANTRI: Returns a random variate from a triangular distribution.
RANUNI: Returns a random variate from a uniform distribution.
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