The probability density function (pdf) is;
f(x)=
for a ≤ x ≤ b.
while the mean is given as 
And the standard deviation given as 
The answer to the question is a
Answer:
1.060
Step-by-step explanation:
I added 1 tenth to the answer.I'm sorry if the answer if wrong. math isnt my best just trying to help
It is not a function because x repeats
Domain={1,-2,-1}
Range={-2,0,2,3}
Hope this helps
Have a great day/night