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:
$3066
Step-by-step explanation:
We have been given that employees in 2012 paid 4.2% of their gross wages toward social security (FICA tax), while employers paid another 6.2%. We are asked to find the amount paid by an employee earning $73,000 per year toward social security.
To find the amount paid by an employee with annual gross earnings of $73,000, we need to find 4.2% of $73,000.



Therefore, the employee will pay $3066 toward social security out of their gross wages.
x+5+x+x+5=4x+10
Answer:
4x+10
Step-by-step explanation:
x+5+x+x+5=4x+10
Answer:
kate will be 44 years old
Step-by-step explanation:
12 + 10 = 22 x 2 = 44
18-8 is equivalent given that is a ratio you're talking about