Continuous random variable X has density given by f(x)=c⋅(x+1)*(x−3) if x∈[−1,3] and 0 otherwise.
1) Find DF(2;X) . distribution function
2) Find E[X] .
C= -3/32

Question

Continuous random variable   X   has density given by   f(x)=c⋅(x+1)*(x−3)   if   x∈[−1,3]   and   0   otherwise.
1) Find   DF(2;X) . distribution function 
2) Find   E[X] . 
C= -3/32

amistre64 · Answer

what does 2;x mean?

anonymous · Answer

is something about the notation of x>2 and x<=2

amistre64 · Answer

i see notifs arent posting ...

anonymous · Answer

i guess i need to put hat in the integral

amistre64 · Answer

im not used to the notation used, can you provide a link to what explains it?  otherwise i wouldnt know if my input is worth anything.

anonymous · Answer

is not in the site rather is on my notes

amistre64 · Answer

and i would assume since your distribution is a quadratic, that its symmetry would give us the vertex as its mean

anonymous · Answer

perpaps

amistre64 · Answer

density = P(x)

distribution = $\int P(x)$

anonymous · Answer

i see

anonymous · Answer

i think is support to be like this ? 
$$\int\limits_{-2}^{2}$$

amistre64 · Answer

lower limit doesnt go past -1, everything after that is 0

anonymous · Answer

ok

anonymous · Answer

i guess there is no way how to solved this :(

anonymous · Answer

here are the notes :(

anonymous · Answer

i will close this one open a new one this is kind of a mess :(