Question 1:

Flip a coin four times. Let Z = the number of heads in four flips with its probability distribution show below. 0 2 3 4 P(Z) 0.0625 0.2500 0.3750 v 0.0625Flip a coin four times. Let Z = the number of heads in four flips with its probability distribution show below. Z 0 1 2 3 4 P(Z) 0.0625 0.2500 0.3750 0.0625 Which expression represents the probability of at least three heads? O P(Z > 3) O P(Z