Explain why each of the following stimulations fails to model the real situation properly:
a) Use a random integer from 0 through 9 to represent the number of heads when 9 coins are tossed.
b) A basketball player takes a foul shot. Look at a random digit, using an odd digit to represent a good shot and an even digit to represent a miss.
c) Use random integers from 1 through 13 to represent the denominations of the cards in a five-card poker hand.