Re: Strange Probability function behavior (Bug?)

*To*: mathgroup at smc.vnet.net*Subject*: [mg122902] Re: Strange Probability function behavior (Bug?)*From*: Brentt <brenttnewman at gmail.com>*Date*: Tue, 15 Nov 2011 05:50:33 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <201111141207.HAA11675@smc.vnet.net>

Oh wait, never mind, it works now that I've restarted the program. Not sure what happened. But its fine now. On Mon, Nov 14, 2011 at 5:43 AM, Bob Hanlon <hanlonr357 at gmail.com> wrote: > Works here. Probability is new in version 8. Are you using version 8? > > $Version > > "8.0 for Mac OS X x86 (64-bit) (October 5, 2011)" > > Probability[x == 3, Distributed[x, PoissonDistribution[m]]] > > ((1/6)*m^3)/E^m > > > Bob Hanlon > > > On Mon, Nov 14, 2011 at 7:07 AM, Brentt <brenttnewman at gmail.com> wrote: > > Hello, > > > > If I go to the Probability function documentation, and evaluate a > > probability function in the documentation notebook, the probability > > function works as would be expected, for example: > > > > In[0]:= Probability[x == 3, Distributed[x, PoissonDistribution[m]]] > >> Out[0]= 1/6 E^-m m^3 > >> > > > > So far so good. > > > > But strangely, if I open up a new notebook and copy and paste the exact > > expression from above into it, I get this > > > > In[0]:= Probability[x == 3, Distributed[x, PoissonDistribution[m]]] > >> Out[0]:= Probability[True, 3 \[Distributed] PoissonDistribution[m]] > >> > > > > What could possibly be happening here? Is this a bug? > > >

**Follow-Ups**:**Re: Strange Probability function behavior (Bug?)***From:*Darren Glosemeyer <darreng@wolfram.com>

**References**:**Strange Probability function behavior (Bug?)***From:*Brentt <brenttnewman@gmail.com>