Probability Review

A store sells shirts that are either small, medium, or large. The colors are either red, blue, green, or white. What is the probability someone will select a large green shirt?

• 1/3
• 1/7
• 1/9
• 1/12

Tags

CCSS.7.SP.C.8B

Andrew picks one marble at a time from a box and replaces it. He repeats this process 25 times and records the results in the table. Based on the table, which color marble has an experimental probability of 1/5?

• Yellow
• Red
• Blue
• Green

Tags

CCSS.7.SP.C.6

Robin has five different pairs of shoes that match with 6 different pairs of socks.  How many shoes-and-socks combinations can she make if she selects one pair of shoes and one pair of socks?

• 1
• 30
• 5!
• 6!

A regular 6-sided die is to be rolled once. What is the probability that a number less than 3 is rolled?

• 1/3

• 1/6

• 1/2

• 2/3

Tags

CCSS.7.SP.C.7B

If you select a marble without looking, how likely is it that you will pick a black one?

• certain

• probable

• unlikely

• impossible

Tags

CCSS.7.SP.C.5

Kevin is making an omelet. There are 7 types of meat and 2 types of cheese to choose from. How many different omelets can Kevin make using exactly one of each item?

• 7

• 14

• 9

• 24

What is the probability of getting any letter that is not A?

• 6/8
• 3/4
• 2/8
• 1/4

Tags

CCSS.7.SP.C.7B

You flip a coin 20 times and record the results. Is this experimental or theoretical probability?

• Experimental
• Theoretical

Deion has two bags of marbles. In the bag labeled ‘A’, he has 3 green, 4 blue and 10 yellow marbles. In the bag labeled ‘B’, he has 13 green, 5 blue, and 12 yellow marbles. Deion wants the bag with the highest probability of selecting a blue marble. Which of the following statements is true?

• It does not matter which bag he chooses because the probabilities are the same.
• He should choose Bag B because there are fewer blue marbles.
• He should choose Bag A because the probability of selecting a blue marble is higher.
• He should choose Bag B because the probability of selecting a blue marble is higher.

A dice (numbered 1-6) is rolled 20 times.  How many times will a number less than 4 show?

• 5
• 10
• 15
• Never

Tags

CCSS.7.SP.C.6