Exam P Practice Question 12
Study guide: Exam P-1
A discrete random variable X has the following probability distribution: P(X=1) = 0.2, P(X=2) = 0.3, P(X=3) = 0.4, P(X=4) = 0.1. What is E[X]?
- A) 2.0
- B) 2.4
- C) 2.5
- D) 3.0
- E) 6.6
Answer this question and see the worked solution