Answer (Choose 1 answer)
If a random variable X takes values 1, 2, 3 and 4 such that P(X=1) = 2P(X=2) = P(X=3) = 4P(X=4), find F(3.5),where F(x) is the cumulative distribution function of X.
A. 1/8
B. 10/11
C. None of the other choices is correct
D. 1/11
E. 7/8
the exam.
