Re: NEED HELP! Mathematica seems to "forget" that a package has been loaded

*To*: mathgroup at smc.vnet.net*Subject*: [mg26548] Re: [mg26487] NEED HELP! Mathematica seems to "forget" that a package has been loaded*From*: "Rudy Cazabon" <raygunprez at earthlink.net>*Date*: Fri, 5 Jan 2001 00:34:00 -0500 (EST)*References*: <92gt96$ksh@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hey Bob... Thanks for the help. Actually, I tracked down the error...and it is an error in my ways. Sincerely, Rudy Cazabon <BobHanlon at aol.com> wrote in message news:92gt96$ksh at smc.vnet.net... > > You did not give any examples so I will just give you some examples to check > your syntax. > > Needs["Statistics`DiscreteDistributions`"]; > > dist = PoissonDistribution[mu]; > > Sum[PDF[dist, x], {x, Sequence @@ Domain[dist]}] > > 1 > > Mean[dist] == Sum[x*PDF[dist, x], {x, Sequence @@ Domain[dist]}] > > True > > {PDF[dist, x], CDF[dist, x], Variance[dist], PDF[PoissonDistribution[7], 10]} > > {mu^x/(E^mu*x!), GammaRegularized[Floor[x] + 1, mu], mu, > 40353607/(518400*E^7)} > > N[PDF[PoissonDistribution[7], 5]] > > 0.12771666829228964 > > > Bob Hanlon > > In a message dated 12/28/00 3:40:42 AM, raygunprez at earthlink.net writes: > > >I am still relatively new to the Mathematica environment, so I please > >request that you have some patience. > > > >I am encountering a situation where when I issue the command > ><<Statistics`DiscreteDistributions` and attempt to use any of the > >functions therein that during the evaluation of that cell that it does > > > >NOT evaluate to a numerical answer. > > > >This is just one example but there are several other packages such as > >Graphics and Geometry where this is the case...Mathematica responds that > > > >such package has loaded. However, the functions don't evaluate. > > > >If you happen to know of any tips, tricks, or procedures to overcome > >this I would truly appreciate it. > > > >