# Transformation problem

#### Shyama

##### New Member
let x be a random variable having u(0,10) distribution and y = x - [x], where [x] denotes the greatest integer less than or equal to x. then p(y > 0.25) equals?

#### noetsi

##### Fortran must die
Honestly, I don't know.
that's scary.

Don't you need a formal test to generate a p value like a t test? And the specific distribution not just a range.

#### Dason

##### Ambassador to the humans
that's scary.

Don't you need a formal test to generate a p value like a t test? And the specific distribution not just a range.
No - it's just a probability question. It's math so you wouldn't like it.

#### Dason

##### Ambassador to the humans
let x be a random variable having u(0,10) distribution and y = x - [x], where [x] denotes the greatest integer less than or equal to x. then p(y > 0.25) equals?
I would suggest making a graph. Then start plotting some points and try to figure out what the graph of y looks like. Once you do that honestly you should be able to figure the values for x that give you y>0.25. When you have that all you need to do is figure out the probability of X falling in that set of values.