Confidence Interval
Flashcard
•
Mathematics
•
11th Grade - University
•
Practice Problem
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a confidence interval?
Back
A confidence interval is a range of values used to estimate the true value of a population parameter, with a specified level of confidence.
Tags
CCSS.HSS.IC.B.4
2.
FLASHCARD QUESTION
Front
What happens to the confidence interval when the sample size decreases?
Back
The confidence interval gets larger.
3.
FLASHCARD QUESTION
Front
What is the critical value for a 90% confidence interval?
Back
1.645
4.
FLASHCARD QUESTION
Front
True or False: A higher confidence level results in a wider confidence interval.
Back
True
Tags
CCSS.HSS.IC.B.4
5.
FLASHCARD QUESTION
Front
What does a 95% confidence level mean?
Back
It means that if we were to take many samples and build a confidence interval from each sample, approximately 95% of those intervals would contain the true population parameter.
Tags
CCSS.HSS.IC.B.4
6.
FLASHCARD QUESTION
Front
What is the formula for calculating a confidence interval for a population mean?
Back
CI = sample mean ± (critical value * standard error)
Tags
CCSS.HSS.IC.B.4
7.
FLASHCARD QUESTION
Front
What is the standard error in the context of confidence intervals?
Back
The standard error is the standard deviation of the sampling distribution of a statistic, commonly the sample mean.
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