Making Predictions with Simple Probability

• A

• B

• C

• D

If 300 students were polled...

• 100

• 150

• 250

• 200

Jillian rolled a number cube 360 times. About how many times do you expect her to roll a 2?

• 20 

• 180

• 60 

• 120

Drake made 14 out of 20 free throw shots.  About how many out of the next 30 free throw shots would you expect him to make?

• 20

• 21

• 22

• 25

Tags

CCSS.7.RP.A.3

A bag contains:

• 5 red marbles

• 6 blue marbles

• 3 green marbles

• 4 black marbles

• 2 yellow marbles

A marble will be drawn from the bag and replaced 200 times. What is a reasonable prediction for the number of times a yellow or green marble will be drawn?

• 20

• 30

• 50

• 40

A poll was taken of Hobby Middle School, 25 out of 30 students said they would prefer pizza on Friday’s. Out of 1200 students, what is a reasonable prediction of how many students would prefer pizza on Fridays?

• 100

• 1000

• 10

• 1

Tags

CCSS.6.RP.A.3B

Pizza Hut surveyed a random sample of students to determine what pizza they prefer. Cheese pizza was preferred by 40 students. Pepperoni pizza was preferred by 28 students. Based on the results, how many of the 340 students in the 9th grade can be expected to prefer cheese pizza?

On a youth soccer team 3 out of the 12 team members have played in previous years. Based on this information, if 150 kids are in the youth soccer league, then how many could be expected to have played the year before?*NOTE: enter your answers as a number ONLY.

Tags

CCSS.7.RP.A.3

A box of 25 lightbulbs is shipped to a hardware store. When it arrives, four of the bulbs are broken. Predict the number of broken lightbulbs in an order of 125 bulbs.

*NOTE: enter your answers as a number ONLY.

The airport security randomly selected 36 suitcases from the security line. Of these bags, they screened 8 suitcases. Based on this information, what is the most reasonable prediction for the number of suitcases they will screen in a group of 180?

*NOTE: enter your answers as a number ONLY.