SOA Exam P Sample Question 112
Study guide: Exam P-1
The figure below shows the cumulative distribution function of a random variable, X.
SOA's figure is a graph of F(x) against x; it is transcribed here as a table of the graph's pieces, left to right.
x |
F(x) on the graph |
|---|---|
x < 0 |
0: horizontal, ending in an open circle at (0, 0) |
0 \le x \le 2 |
0.5: horizontal, from a filled dot at (0, 0.5) to a filled dot at (2, 0.5) |
2 \le x \le 3 |
a straight line from (2, 0.5) up to a filled dot at (3, 1.0) |
x \ge 3 |
1.0: horizontal from (3, 1.0) onward |
Calculate E(X).
- A) 0.00
- B) 0.50
- C) 1.00
- D) 1.25
- E) 2.50
Answer this question and see the worked solution