12.1-12.2 Probability Review

A bag contains 3 red marbles, 2 white marbles, 5 maroon marbles and 2 blue marble.

What is the probability of reaching into the bag and selecting a blue marble?

Tags

CCSS.7.SP.C.7B

A bag contains 3 red marbles, 2 white marbles, 5 maroon marbles and 2 blue marble.

What is the probability of reaching into the bag and NOT selecting a red marble?

Roll a dice and add up the sum of the two numbers. Make a tree diagram or area model to show all possible outcomes.

What is the probability of rolling a sum of 9?

Tags

CCSS.7.SP.C.8B

Which of the following is true about probability?

(Hint: There can be more than one correct answer)

• Probability is expressed as desired outcomes over total outcomes.

• The probability of an even falls between 0 and 1.

• Probability is expressed as desired outcomes over undesired outcomes.

• Probability can be expressed as a fraction, a decimal or a percent.

Tags

CCSS.7.SP.C.5

What is the probabilty of landing in the shaded region of the target?

• 3/5

• 9/25

• 16/25

• 2/5

Tags

CCSS.7.SP.C.7B

What is the probabilty of hitting the target and landing in the shaded region?

• 1/3

• 2/3

• 1/9

• 8/9

Tags

CCSS.7.SP.C.7B

A deck of cards has four suits (hearts, diamonds, spades, clubs). Each suit has 13 cards (2-10, king, queen, jack, ace). Heart and diamonds are red, and clubs and spades are black.

What is the probability of picking a spade from the deck?

• 1/4

• 1/13

• 1/2

• 9/13

Tags

CCSS.7.SP.C.7B

A deck of cards has four suits (hearts, diamonds, spades, clubs). Each suit has 13 cards (2-10, king, queen, jack, ace). Heart and diamonds are red, and clubs and spades are black.

What is the probability of picking a red face card from the deck?

• 3/26

• 3/52

• 3/16

• 6/13

Tags

CCSS.7.SP.C.7B

About 2 in 11 people "win" the during the McDonalds Monopoly contest. How many times should someone expect to "win" if they eat at McDonalds once a day for 44 days?

• 4 times

• 11 times

• 8 times

• 22 times

Tags

CCSS.7.SP.C.6

3% of all ballots are rejected by voting machines and have to be counted by hand. If 1,500 ballots are processed by a voting machine, how many of those will have to be counted by hand?

• 45 ballots

• 450 ballots

• 1,455 ballots

• 15 ballots

Tags

CCSS.6.RP.A.3C