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MATLAB: An Introduction with Applications
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ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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![**Challenge Activity: 5.7.1: Confidence Intervals for Population Means**
**Jump to level 1**
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches. The heights of 8 randomly selected students are 68, 75, 62, 61, 61, 65, 65, and 74.
\[
\bar{x} = \text{Ex: 12.34}
\]
Margin of error at 95% confidence level = \(\text{Ex: 1.23}\)
95% confidence interval = \([\text{Ex: 12.34, Ex: 12.34}]\)
*[smaller value, larger value]*
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Transcribed Image Text:**Challenge Activity: 5.7.1: Confidence Intervals for Population Means**
**Jump to level 1**
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches. The heights of 8 randomly selected students are 68, 75, 62, 61, 61, 65, 65, and 74.
\[
\bar{x} = \text{Ex: 12.34}
\]
Margin of error at 95% confidence level = \(\text{Ex: 1.23}\)
95% confidence interval = \([\text{Ex: 12.34, Ex: 12.34}]\)
*[smaller value, larger value]*
Buttons at the bottom:
- Check
- Next
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