In each problem, make sure that you are clearly defining random
variables, stating their distributions, and writing down the
formulas that you are using. (That is, write down the pmf, write
down mean and variance formulas.
4. In the video game Dota 2, the character Phantom Assassin has
a 0.15 chance to land a critical hit with every attack. Assume that
each attack is independent from the previous attacks. (They
actually aren’t, but we’ll simplify the problem by making this...