Statistical Inferences

• More than 50% of the customers bought chocolate. 
• About 50% of the customers bought strawberry. 
• More than 25% of the customers bought vanilla. 
• About 25% of the customers bought mint. 

Tags

CCSS.6.RP.A.3C

• 5 red shirts
• 17 red shirts
• 40 red shirts
• 83 red shirts

Tags

CCSS.6.RP.A.3B

Out of a sample of 20 video games, 1 was defective.  About how many video games would be defective in a shipment of 490 video games? (Round your answer to the nearest whole number.)

• 490
• 25
• 98
• 100

Tags

CCSS.6.RP.A.3B

Shannon made the last 12 out of 20 shots for the varsity basketball team.  How many shots would you expect him to make in his next 160 shot attempts?

• 96
• 120
• 24
• 80

Tags

CCSS.6.RP.A.3B

The results of a random survey showed that 42 out of 84 people plan to vote for Coach Vasquez for teacher of the month. Which is the best prediction of the total number of votes he will receive if 2,000 people vote?

• 825
• 750
• 1200
• 1000

Tags

CCSS.6.RP.A.3B

If there are 300 seventh graders, how many students prefer choir?

• 96
• 24
• 75
• 42

Tags

CCSS.6.RP.A.3C

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?

*NOTE: enter your answers as a number ONLY.

Tags

CCSS.7.RP.A.3

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.

Tags

CCSS.7.RP.A.3

A principal randomly chooses 40 students from grade 5. Of these students, 9 were wearing watches. Based on this information, what is the most reasonable prediction of the number of students wearing watches in a group of 120 students?

• 27

• 9

• 18

• 80

Tags

CCSS.7.RP.A.3