A discrete random variable X has the following probability mass function
P(X = x) = {
...
Mathematics, 29.04.2021 15:40 apowers1760
A discrete random variable X has the following probability mass function
P(X = x) = {
2kx x = 2, 4, 6
k(x + 2) x = 8
0 otherwise
where k is a constant
a. Show that k =
1
34
b. Find the exact value of P(4 < x ≤ 8)
c. Find the exact value of P(2 < x < 4)
d. What is the expected value of the random variable X?
e. What is the variance of the random variable X?
f. Determine Var(5 − 3X)
Answers: 1
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