
Samples and Margin of Error
Authored by Anthony Clark
Mathematics
12th Grade

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A research team surveys 1001 adults, asking them how many hours they work per week. What is the margin of error for this survey?
3%
32%
63%
9%
2.
MULTIPLE CHOICE QUESTION
1 min • 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
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A research team surveys 200 high schoolers at glenoak. They find that 57% of them drive to school every day. What is the margin of error?
95%
14%
7%
3%
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
This target depicts what?
Low bias, low variability
High bias, low variability
Low bias, high variability
High bias, high variability
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the mean of a sample is 203 and the margin of error is 4.6, what would be a reasonable mean for the population?
99.2
198.3
207.2
207.7
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How could Javier decrease the margin of error?
Increase the sample size
Decrease the sample size
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What can you do to reduce the margin of error?
increase sample size
decrease sample size
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