Answer:
a) Computing the expected value E(XY) gives 1/4
b) The probability density function fZ(z) of Z = XY is calculated in the attached picture.
c) Computing E(Z) gives 1/4
Step-by-step explanation:
Comparing the computation of E(Z) using the answer to b), it shows that the values are equal.
Answer:
Hours.
Step-by-step explanation:
Snacks is dependent because the number of snacks depends on the hours gone.
That would be C, D, E and F.
Answer:
75%
Step-by-step explanation: