Probability and Odds Practice

A music collection includes 10 rock CDs, 8 country CDs, 5 classical CDs, and 7 hip hop CDs. What is the probability that a CD randomly selected is not a rock CD?

• 1/3

• 2/3

• 1/2

• 3/4

A music collection includes 10 rock CDs, 8 country CDs, 5 classical CDs, and 7 hip hop CDs. What is the probability that a CD randomly selected is a classical CD?

• 1/6

• 1/3

• 1/2

• 1/4

Tags

CCSS.7.SP.C.7B

A bag contains letter tiles that spell the name of the state MISSISSIPPI. Find the following theoretical probability of drawing a tile.

a. P(I) = ​ (a)  

b. P(S) = ​ (b)  

c. P(not I or S) = ​ (c)  

Tags

CCSS.7.SP.C.7B

A number cube, with faces labeled from 1 through 6, is tossed. Find the probability of rolling a number less than 5.

• 1/2

• 2/3

• 1/3

• 5/6

Tags

CCSS.7.SP.C.7B

A number cube, with faces labeled from 1 through 6, is tossed. Find the probability of rolling a prime number.

• 1/2

• 2/3

• 1/3

• 5/6

Tags

CCSS.7.SP.C.7B

A student randomly selected 65 vehicles in the student parking lot and noted the color of each. She found that 9 were black, 10 were blue, 13 were brown, 7 were green, 12 were red, and 14 were a variety of other colors. Find the experimental probability of not selecting a blue vehicle.

Tags

CCSS.7.SP.C.6

A student randomly selected 65 vehicles in the student parking lot and noted the color of each. She found that 9 were black, 10 were blue, 13 were brown, 7 were green, 12 were red, and 14 were a variety of other colors. Find the experimental probability of not selecting a green vehicle.

Tags

CCSS.7.SP.C.6

A student randomly selected 65 vehicles in the student parking lot and noted the color of each. She found that 9 were black, 10 were blue, 13 were brown, 7 were green, 12 were red, and 14 were a variety of other colors. Find the odds against a red vehicle.

The students in a math class took turns rolling a standard number cube. The results are shown in the table below. Calculate the following experimental probabilities.

• P(not 2)

• P(1)

• P(a number greater than 1)

• P(not 5)

• P(3 or 4)

Tags

CCSS.7.SP.C.6

The table shows how many of each marble are in a bag. Match the following odds to their descriptions.

• Odds against blue

• Odds against white

• Odds in favor of green or yellow

• Odds in favor of red