Margin of error Quiz

Name: ______________________   Date: __________   Score: ____ / 10

10 questions. Calculator allowed. Show your working. steplyclass.com/statistics/margin-of-error/quiz/

1. 1

   A survey says 52% with a margin of error of 3%. Is 50% a plausible value?
   1. A) Yes
   2. B) No

2. 2

   A survey says 40% with a margin of error of 4%. Is 45% a plausible value?
   1. A) Yes
   2. B) No

3. 3

   A survey says 35% with a margin of error of 2%. What are the plausible values?

   Answer: ____________________

4. 4

   A poll says 48% with a margin of error of 3%. What are the plausible values?

   Answer: ____________________

5. 5

   A survey says 55% with a margin of error of 4%. Is 50% a plausible value?
   1. A) Yes
   2. B) No

6. 6

   The mean height in a sample is 152 cm with a margin of error of 3 cm. Is 150 cm a plausible value for the mean?
   1. A) Yes
   2. B) No

7. 7

   A poll finds that 54% of voters like the plan, with a margin of error of 5%. Can we be sure that more than half of all voters like the plan?
   1. A) Yes
   2. B) No

8. 8

   A survey says 30% with a margin of error of 3.5%. Is 27% a plausible value?
   1. A) Yes
   2. B) No

9. 9

   A survey finds that 46% of people agree, with a margin of error of 3%. Can we be sure that more than half of all people agree?
   1. A) Yes
   2. B) No

10. 10

    The mean in a sample is 12.6 with a margin of error of 1.2. Is 14 a plausible value for the mean?
    1. A) Yes
    2. B) No