probability review

These 12 shapes are put into a bag.  What is the probablity of reaching into the bag without looking and pulling out a square, NOT replacing the square and pulling out a second square?

• 1/11
• 1/9
• 1/3

These 12 shapes are put into a bag.  What is the probability of pulling out a triangle, replacing the triangle and then pulling out a square?

• 1/11
• 1/12
• 1/3
• 1/2

There are 8 blue marbles in a bag of 20 total marbles.  What is the probablity of NOT choosing a blue marble at random from the bag?

• 40%
• 60%
• 80%
• 85%

Tags

CCSS.7.SP.C.5

While standing outside of the school waiting to go home, you notice that 3 out of every 12 students leaving school are on their cell phones.  What is the probability that the next student leaving school will NOT be on his or her cell phone?

• 25%
• 30%
• 75%
• 70%

100 second graders were asked to do a book report about one of these four zoo animals.  The number of students who chose each animal is shown in the table.  If 250 second graders had to choose of of the four animals, predict how many would choose to write about a giraffe.

• 60 students
• 50 students
• 40 students
• 30 students

Tags

CCSS.7.RP.A.2C

How many combinations of outfits can you make from 3 pairs of shorts, 2 shirts, and 1 pair of shoes?

• 8 combinations
• 5 combinations
• 4 combinations
• 6 combinations

Ten marbles are in a bag.  What is the probability of choosing a black marble, replacing it back into the bag, and then getting a white marble?

• 2/25
• 3/50
• 1/8
• 3/5

What is the theoretical probability of the spinner landing on a 5?

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Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

The bar graph shows the results of spinning the spinner 200 times. What is the experimental probability of landing on a 3?

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Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

The bar graph shows the results of spinning the spinner 200 times. What is the theoretical probability of landing on a 4 ?

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Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7