SOA Exam P Sample Question 565
Study guide: Exam P-1
The proportion of cotton plants on a large farm infested with boll weevils is modeled by a continuous random variable with probability density function
f(x) = \begin{cases}
20x^3(1-x), & \text{for } 0 \leq x \leq 1 \\
0, & \text{otherwise.}
\end{cases}Calculate the standard deviation of the proportion of cotton plants on the farm that are infested with boll weevils.
- A)
0.032 - B)
0.178 - C)
0.476 - D)
0.690 - E)
0.959
Answer this question and see the worked solution