A biased coin has a 0.7 probability of landing on heads and a 0.3 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?

0.7

0.5

0.4

0.3

Question

A biased coin has a 0.7 probability of landing on heads and a 0.3 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?

0.7

0.5

0.4

0.3

vocaloid · Answer

mean value = (probability of heads)*0 + (probability of tails)*(1)