Unit 8 Review

There is a 50% chance of rain one day. Which of the following could be used to simulate that? (choose all that apply)

• Flip a coin, it will rain if it lands on heads

• Roll a die, it will rain if it lands on 1

• Roll a die, it will rain if it lands on an even number

• Put 5 tiles (3 yellow, 2 blue) in a bag, it will rain if you choose a yellow tile

Tags

CCSS.7.SP.C.8C

When we calculate the expected outcomes (for example: number of coin flips, or numbers from a die), are they guaranteed to happen?

• Yes: the probability is always going to be the same when we actually perform the events

• No: calculating the probability lets us know what to expect, but it is not guaranteed

When you roll a standard six-sided die, what is the probability of rolling a number less than 3?

• 1/3

• 1/6

• 1/2

• 1/4

Tags

CCSS.7.SP.C.7A

You spin this spinner two times. Find the following probability:

P(purple, not red)

• 1/25

• 1/5

• 4/25

• 2/5

You flip a coin, and roll a standard six-sided die. Find the following probability:

P(Heads, 5 or 6)

• 1/2

• 1/6

• 1/12

• 5/6

If you roll a standard, six sided die 90 times, about how many times would you expect to roll a 6?

• About 15 times

• About 90 times

• About 45 times

• About 5 times

Tags

CCSS.7.SP.C.6

20 students were surveyed about how they get to school. 6 said they ride their bikes. About what percent of the school would you expect to ride their bikes?

• 6%

• 30%

• 60%

• 20%

20 students were surveyed about how they get to school. 6 said they ride their bikes. There are 300 students in the school. About how many students at the school would you expect to ride their bikes?

• About 6

• About 20

• About 90

• About 200

Tags

CCSS.6.RP.A.3B

If you spin this spinner 100 times, how many times would you expect it to land on red?

• 1

• 10

• 20

• 50

Tags

CCSS.7.SP.C.6

A bag contains 5 red, 3 blue, and 2 green marbles. What is the probability of selecting a green marble?

• 2

• 1/10

• 1/5

• 1/2

Tags

CCSS.7.SP.C.7B