Margin of Error
Authored by Cristine Bentley
Mathematics
12th Grade
CCSS covered
Used 1+ times
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15 questions
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1.
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 average of the sample?
(Find the middle)
$44
$50
$52
$54
2.
MULTIPLE SELECT QUESTION
45 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
Tags
CCSS.HSS.IC.B.4
3.
MULTIPLE CHOICE 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.
Create a confidence interval for the true mean.
(534, 554)
(514, 534)
(514, 554)
Tags
CCSS.HSS.IC.B.4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine whether the action would increase or decrease the margin of error:
Increase the sample size
Margin of error increases
Margin of error decreases
Tags
CCSS.HSS.IC.B.4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine whether the action would increase or decrease the margin of error:
Increase the confidence level from 95% to 99.7%
Margin of error increases
Margin of error decreases
Tags
CCSS.HSS.IC.B.4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine whether the action would increase or decrease the margin of error:
Decrease the confidence level from 95% to 68%
Margin of error increases
Margin of error decreases
Tags
CCSS.HSS.IC.B.4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A random sample of 40 bags of Doritos was obtained.
The mean weight was 15.5 oz with a standard deviation of 0.2 oz.
Find the standard deviation of the sample.
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