. Consider an unfair coin that has probability 3/4 of coming up heads. If the coin is flipped three times, what is the probability of seeing tails each time: P(tails, tails, tails) =? . I agree to let you flip the unfair coin (the same unfair coin as the previous problem) one time and pay you $1 if it comes up heads and $2 if it comes up tails. Let X be the number of dollars I pay you, which is a random variable. What is the expected value of X: E X] =