Hoi, i dont see why the following is true

Let ( i.i.d. Bernoulli trials)

and consider ( Then clearly )

Apparantly the distribution function F of Y is constant on the interval and satisfies

and

for it satisfies

I'm a bit bewildered...:/

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- October 15th 2012, 03:46 AMDinkydoesum of Bernoulli trials
Hoi, i dont see why the following is true

Let ( i.i.d. Bernoulli trials)

and consider ( Then clearly )

Apparantly the distribution function F of Y is constant on the interval and satisfies

and

for it satisfies

I'm a bit bewildered...:/ - October 15th 2012, 06:36 PMchiroRe: sum of Bernoulli trials
For the first one, can you show that the median occurs at that point? If your distribution is symmetric, can you show the mean occurs at that point? (Hint: your distribution has 1/2 for a 0 value and 1/2 for a 1 value for every X_k).

- October 16th 2012, 12:55 AMDinkydoeRe: sum of Bernoulli trials
I think i got it now...

and

I think i see the other 2 as well...