SOA Exam P Sample Question 629
Study guide: Exam P-1
Let Y be a discrete random variable with probability function
p(y) = \begin{cases}
0.2, & \text{for } y = a \\
0.1, & \text{for } y = 1 \\
0.3, & \text{for } y = 3 \\
0.4, & \text{for } y = 10 \\
0, & \text{otherwise,}
\end{cases}where a is a constant less than 0.
E(Y^2) = 47.8.
Calculate \text{Var}(Y).
- A)
5.6 - B)
11.8 - C)
22.8 - D)
31.8 - E)
63.8
Answer this question and see the worked solution