Probability Review

The game show host asks students to choose a marble at random. What is another way to describe the word random?

• To select based on the color most preferred

• To select all the marbles at one time

• To select the color of marbles least preferred

• To select with no regard to order or preference
  

A dartboard has 4 equal sections, of which 2 are orange.
What is the probability that a dart will land in an orange section?

• 1/2

• 2/4

• 50%

• All of the above

An amusement park has 18 attractions, including 8 arcades.
What is the probability that a randomly selected attraction at this amusement park will be an arcade?

• 8/18

• 4/9

• 44%

• All of the above

What is the probability of picking a green marble, keeping it, then picking another green marble? (leave answer in fraction form in lowest terms)

• 9/49

• 1/7

• 3/14

• 6/42

What is the probability of drawing a 1, then drawing a 6? (no replacement--dependent event)

• 6/56 = 3/28

• 3/7

• 2/8 = 1/4

• 8/56 = 1/7

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

How many outcomes are there with tossing a coin and rolling a dice?

• 2

• 6

• 12

• 24

What is sample space?

• a process with an uncertain result

• a possible result of an action

• a list of all possible outcomes of an event

• a single outcome or group of outcomes

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