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Margin of Error

Authored by Jessica Knight

Mathematics

9th - 11th Grade

CCSS covered

Used 1+ times

Margin of Error
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13 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A recent survey found that out of 400 random American adults, 89% pay their bills on time. The margin of error in this survey was 2%. What is the interval of values in which the truth is likely found?

89% - 91%

87% - 89%

87% - 91%

388 - 402

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is a sample of 1000 people better than a sample of 100 people?

It reduces the margin of error.

It decreases bias.

Having more people is always better.

More people means that our results are more accurate.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Find the area of the shaded region.

16%

84%

68%

34%

Tags

CCSS.HSS.ID.A.4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You have a mean of 56 and a standard deviation of 4.3. What is +2 standard deviations from the mean?

60.3

47.4

51.7

64.6

Tags

CCSS.HSS.ID.A.4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Frannie and Fiona collect data comparing students' GPA and how many hours per week they spend doing extracurricular activities. This is best described as a(n)

observational study

matched pairs design

experiment

survey

Tags

CCSS.HSS.IC.B.3

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

A study by the department of education in a certain state found that there was a mean SAT score of 534 with a margin of error of 20.

Which score(s) would fall outside the confidence interval?

505

530

550

558

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A study was commissioned to find the average water bill of a particular town.

The confidence interval created was between $44-$56.

What was the margin of error?

$4

$50

$6

$12

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