Probability and Sampling 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

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6

• 1/2

• 1/3

• 1/6

An unlikely chance event is closer to what number?

• 0

• 1

• 2

• 3

What is the theoretical probability that an even number will be rolled on a number cube?

• 1/3

• 1/2

• 2/3

• 1/6

What was the experimental probability of how many times an even number was actually rolled using the table?

• 2/3

• 5/7

• 5/12

• 1/2

If a dice is rolled 300 times, how many times would you predict a roll of a 1 or a 6?

• 50

• 100

• 150

• 75

You spin the spinner. How many possible outcomes are there?

• 4

• 8

• 1

• 6

A safety inspector conducts air quality tests on a randomly selected group of 7 classrooms at an elementary school.

• The population is all classrooms in the district; the sample is the 7 classrooms selected.

• The population is all classrooms in the elementary school; the sample is the 7 classrooms selected.

• The population is all elementary students in the school; the sample is the students in the 7 classrooms selected.

Jenny randomly selects 20 boxes of crayons from the shelf and finds two boxes with at least one broken crayon. If the shelf holds 130 boxes, how many would you expect to have at least one broken crayon?

• 10 boxes

• 13 boxes

• 6.5 boxes

• 2 boxes

What is the Theoretical Probablility of landing on red?

• 43%

• 33.3%

• 40%

• 36%