03. Practice 5.6 Confidence Intervals
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Medium
Julianne Gallant
Used 6+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the 95% Confidence Interval for a population mean is from 114.56 to 125.54, then is it likely that the the mean (µ) is greater than 130?
Yes
No
Not enough information
I have no idea what you're asking of me
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is another way of representing the range 60.8% to 67.2%?
64 ± 3.2%
60 ± 0.8%
64 ± 0.2 %
67 ± 0.2%
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A poll showed that 58% of people living in Canada know that the cost of living for the average Inuit is 50% higher than the cost of living for other Canadians. The results of the survey are considered accurate within ± 3.1%, 19 times out of 20. Which of the following represents the confidence level:
58%
3.1%
50%
95%
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A poll showed that 58% of people living in Canada know that the cost of living for the average Inuit is 50% higher than the cost of living for other Canadians. The results of the survey are considered accurate within ± 3.1%, 19 times out of 20. Which of the following represents the margin of error:
58%
3.1%
50%
95%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A poll showed that 58% of people living in Canada know that the cost of living for the average Inuit is 50% higher than the cost of living for other Canadians. The results of the survey are considered accurate within ± 3.1%, 19 times out of 20. Which of the following represents the confidence interval:
58% ± 3.1%
3.1% ± 58%
50% ± 58%
95% ± 19%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A poll showed that 64% of grade 11 Math students reported better dental checkups after using Winterfresh Toothpaste. The results of the survey are considered accurate within ± 3.4%, 9 times out of 10. What is the confidence level:
90%
3.4%
64%
95%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A poll showed that 64% of grade 11 Math students reported better dental checkups after using Winterfresh Toothpaste. The results of the survey are considered accurate within ± 3.4%, 9 times out of 10. What is the confidence interval:
90% to 100%
3.4% to 64%
60.8% to 67.2%
90% to 95%
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