Four cards are selected, one at a time, from a standard deck of 52 playing cards. Let

Question:

Four cards are selected, one at a time, from a standard deck of 52 playing cards. Let x represent the number of aces drawn in the set of four cards.
a. If this experiment is completed without replacement, explain why x is not a binomial random variable.
b. If this experiment is completed with replacement, explain why x is a binomial random variable.