Form 11: Using Proportional Reasoning for Population Estimates

Questions

1. MultiChoice

   A random sample of 40 students reveals 18 walk to school. If there are 800 students in the school, set up a proportion to estimate total walkers.

2. MultiChoice

   Out of 50 sampled fish, 12 are bass. Which proportion predicts the total number of bass (x) in a lake of 600 fish?

3. MultiChoice

   In a random sample of 30 gym members, 12 attend morning classes. Estimate how many of 500 total gym members attend morning classes.

4. MultiChoice

   A sample of 80 factory items has 7 defects. How many defects are expected in a production run of 1,600 items?

5. MultiChoice

   Survey: 15 out of 25 people favor a park renovation. Predict total supporters in a town with 500 voters.

6. MultiChoice

   In a middle school of 450 students, a random sample of 60 shows 30 participate in clubs. Estimate total club participants.

7. MultiChoice

   If 8 out of 20 surveyed households have solar panels, how many solar households are predicted among 800 homes?

8. MultiChoice

   Sample of 50 students: 24 prefer online textbooks. Predict total online textbook preference in a district of 1,000 students.

9. MultiChoice

   A mechanic checks 30 cars and finds 6 need new brakes. Predict how many cars need new brakes in a fleet of 500.

10. MultiChoice

    Out of 40 sampled students, 28 buy lunch at school. Out of 500 students, estimate how many buy school lunch.

11. MultiChoice

    A random sample of 10 park acres shows 3 acres infested with weeds. In a 350-acre park, estimate total infested acres.

12. MultiChoice

    In a survey of 100 town residents, 45 support building a new library. Predict how many out of 1,000 total residents support it.