1. What is the mean?
11.03
2. What is the standard deviation?
6.34
3. What is the 95% confidence interval?
1.8
4. Would the confidence interval become wider or more narrow, if the confidence level was 90%?
The confidence interval becomes narrower when the confidence level decreases from 95%-90%.
5. What is the primary reason the interval is the width that it is?
Having a bigger range of numbers lets you be more confident that it will have the true mean. A higher
confidence interval will have a bigger width.
11.03
2. What is the standard deviation?
6.34
3. What is the 95% confidence interval?
1.8
4. Would the confidence interval become wider or more narrow, if the confidence level was 90%?
The confidence interval becomes narrower when the confidence level decreases from 95%-90%.
5. What is the primary reason the interval is the width that it is?
Having a bigger range of numbers lets you be more confident that it will have the true mean. A higher
confidence interval will have a bigger width.
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