Probability Review

The cafeteria is serving three kinds of sandwiches:  tuna (T), chicken, (C), and peanut butter (P).  They are also serving a choice of two drinks:  milk (M) or water (W).  Which shows the CORRECT Sample Space List of possible combinations?

• TW, CW, PW

• TW, TM, TC, CW, PW

• TW, TM, CW, CM, PW, PM

• TCP, MW

There are 4 jacks in a standard deck of 52 playing cards. If Peyton selects a card at random, what is the probability that it will be a jack?

• 1/13

• 1/52

• 1/2

• 12/13

There are 14 tiles with one letter from the word MATHEMATICIANS on each. Find the probability of NOT randomly choosing the letter "S or T". P(not S or T)

• 11/14

• 3/14

• 3/7

• 4/7

Probability of:

Spinning a 3

Drawing an A

• 2/8

• 1/4

• 1/16

• 1/8

A bag has 6 black checkers and 4 red checkers.

Find the probability of drawing a black checker from a bag , replacing it, and drawing another black checker.

• 2/3

• 9/25

• 2/5

• 3/5

What is the probability of drawing a 9, then drawing another 9? (no replacement--dependent event)

• 1/8

• 4/8 = 1/2

• 0

• 2/9

Suppose a number cube is rolled twice. What is the probability that an odd number will show both times?

• 1/3

• 1/2

• 1/6

• 1/4

Brooke has a box of crayons. 45 are yellow, 12 are green, 25 are blue, and 7 are red. If Brooke selects a crayon at random, which color crayon would she be most likely to select?

• yellow

• green

• blue

• red

A restaurant surveys customers with the following results: 8 pizzas, 12 hamburgers, 14 pastas, and 6 steaks. What is the experimental probability of pizza or steak?

P(pizza or steak)

• 20%

• 65%

• 50%

• 35%

A number cube is rolled twice. What is the probability of getting a 6 on the first roll, then a number less than 5 on the second roll? 

• 2/3

• 5/36

• 1/9

• 1/36