What's name of this distribution?

[panda1234]

Hi,
if we create a sequence and call these w1...wN with exponential distribution with parameter lambda then we create:

what's name of this distribution?
Thanks

 

[ahmad1954]

Probability density function

 

[panda1234]

I know that.
My question is what's name of this?(for example gaussian,t student and etc)

 

[ahmad1954]

normal distribution

 

[panda1234]

why?can you prove it?

 

[Dominik Przyborowski]

Maybe You thinking about Poisson?

 

[panda1234]

I'm not sure about that.

 

[andre_luis]

Where is the parameter lambda in the sequence above ?