4.1, p. 160

12, 13
 

4.2, p. 173

2, 3,5,6,7,10,14

4.3, p. 195
4, 7 (Just write out the steps of the 5-step method.  Don't carry them out.)

4.4, p. 202
2,3,7,8

4.6, p. 215
2

5.2, p. 244
1
 

A. Imagine a well-shuffled deck of standard playing cards.  Draw two cards, without replacement.
a) What is the probability that the second card is red?  (You're not allowed to look at the first card!)
b) You look at the first card and it is black.  What is the probability the second card is red?
(Hint: In a standard deck, half the cards are red, half are black.)

B. Same problem as A, but now you deal the cards WITH replacement. This means you deal a card, put it back, reshuffle the deck, and deal again.