Answer:
-8 
Step-by-step explanation:
÷
=
x 12
=
= -8 
Answer:
The process of changing or causing something to change from one form to another. i hope this help
Step-by-step explanation:
Answer:
B (I think)
Step-by-step explanation:
$2.88 divided by 12 is 0.24
We can rewrite the asked question like this:

wherein X_1 and X_2 are random variable with the same given normal distribution. Then mean of

is zero and the variance
can be computed like this:

So, the random variable

follows a normal distribution
with means 0 and standard deviation 9.6.
The median of the law N(0,9.6) is 0.
So the expected difference of the score is 0.