Question

A biased coin has a 0.4 probability of landing on tails. The random variable X, based on a single toss of the coin, is defined as follows: X = 0 if heads appears; X = 1 if tails appears. What is the mean value of X?

A) 0.7
B) 0.5
C) 0.4
D) 0.3
E) 0.6

Answer 1

c) .4