Answer:
the person above is right it's 4.5 units
give them the crown

where

is the CDF for

.
By symmetry of the distribution, you then have
Answer: 
Step-by-step explanation:
If you meant to solve for "z", then refer to the attachment below.
Answer:
126
Step-by-step explanation:
i don't know if it's correct or not
Answer:
yes
Step-by-step explanation:
(2,2)
x=2 y=2
x+y=4
2+2=4
4=4
5x+5y=20
5(2)+5(2)=20
10+10=20
20=20