Problem:
You are organizing an outdoor concert for next week and believe attendance will depend on the weather. You consider the following possibilities are appropriate:
Weather Probability = F(x) Attendance = X
Terrible weather 0.2 500
Mediocre weather 0.6 1000
Great weather 0.2 2000
1. Let X denote the attendance. Why is X a random variable?
2. What is the expected attendance?