- #1
Imagin_e
- 60
- 0
Hi!
I'm searching for guidance and help since I don't know how to solve this problem. Here it is:
a) The two-dimensional random variable (ξ,η) is uniformly distributed over the square
K={(x,y): 0≤x≤1 , 0≤y≤1} . Let ζ=√ξ2+η2 me the distance between the origo and the point (ξ,η) . Calculate the probability P(ζ<1)
b) The three-dimensional random variable ξ=(ξ1,ξ2,ξ3) is uniformly distributed on a sphere, which has origo as it's center and a radius of 1. Calculate the probability that ξ ends in the area A which is given by:
A={(x1,x2,x3): 1/3 <√x12+x22+x32≤2/3} . You should, in other words, calculate :
P(1/3<ζ≤2/3) , where ζ=√ξ12+ξ22+ξ32
Note: √ means square root of.. I literarily have no idea where to start.
I'm searching for guidance and help since I don't know how to solve this problem. Here it is:
a) The two-dimensional random variable (ξ,η) is uniformly distributed over the square
K={(x,y): 0≤x≤1 , 0≤y≤1} . Let ζ=√ξ2+η2 me the distance between the origo and the point (ξ,η) . Calculate the probability P(ζ<1)
b) The three-dimensional random variable ξ=(ξ1,ξ2,ξ3) is uniformly distributed on a sphere, which has origo as it's center and a radius of 1. Calculate the probability that ξ ends in the area A which is given by:
A={(x1,x2,x3): 1/3 <√x12+x22+x32≤2/3} . You should, in other words, calculate :
P(1/3<ζ≤2/3) , where ζ=√ξ12+ξ22+ξ32
Note: √ means square root of.. I literarily have no idea where to start.