SP.2 Review

A group of researchers wanted to monitor the trout population, so they marked 340 trout with tags. Later, they captured 600 trout and found that 30 of them had tags. What is the BEST estimate for the trout population?

• 6,200

• 6,400

• 6,600

• 6,800

To estimate the number of lizards in a certain region, Sean traps 36 lizards and marks them. He releases these lizards and then later catches 200, 16 of which are marked. What is the BEST estimate for the lizard population?

• 400

• 425

• 450

• 475

While doing research on a lake, biologists tagged 200 walleye. Later, they captured 160 walleye, of which 16 had tags. What is the BEST estimate for the walleye population?

• 2,000

• 2,300

• 2,600

• 3,000

Randy is starting a beehive so that he can have fresh honey. He decides to check the current population of bees in the hive by marking 160 bees. Later, Randy collects 240 bees and observes that 30 of them are marked. What is the BEST estimate for the bee population?

• 1,200

• 1,240

• 1,280

• 1,300

To select a new school mascot, 20 randomly selected students in each grade were asked to choose between the two finalists: tiger and eagle. The results are shown in the table. If there are 800 students in the school, how many could you expect to choose tiger?

• 80

• 400

• 800

• 1,600

A survey found that 5 out of 6 people in a community visit a dentist on a regular basis. If there are 4,320 people in the community, what is a reasonable prediction for the number of people who would visit a dentist on a regular basis?

• 720

• 864

• 2,880

• 3,600

Tags

CCSS.6.RP.A.3B

A museum employee surveys a random sample of 350

visitors to the museum. Of those visitors, 266 stopped at the gift shop. Based on these results, about how many people out of 2,300 visitors to the museum would be expected to stop at the gift shop?

• 40

• 100

• 1,748

• 3,026

A survey showed that 70% of students would select roller coasters as their favorite ride at an amusement park. Out of 5,000 students, predict how many would select roller coasters as their favorite ride?

• 3,500

• 1,500

• 350

• 150

Tags

CCSS.6.RP.A.3C

Gabrielle surveyed a random sample of 40 students in her school's cafeteria about whether they ate the cafeteria's tomato soup.

• Fourteen of the sampled students said they ate the tomato soup.

• A total of 840 students eat in the cafeteria each day.

Based on the results of Gabrielle's survey, how many of the 840 students who eat in the cafeteria can be expected to eat the tomato soup?

• 2

• 294

• 840

• 2,400

Tags

CCSS.7.RP.A.3

​Jeanette chose 100 of the 1,500 students at her school at random and ​asked what was their favorite team sport to play. The results are ​shown in the table. How many total students could Jeanette expect to choose soccer as their favorite sport to play?