Suppose that the confidence interval for the difference in the average brain wave activity is : (-10, 16). What conclusion can be made?
Suppose that the confidence interval for the difference in the average brain wave activity is : (-10, 16). What conclusion can be made?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Transcribed Image Text:**Confidence Interval Analysis**
Suppose that the confidence interval for the difference in the average brain wave activity is: (-10, 16).
**What conclusion can be made?**
1. ○ The average brain wave activity is substantially longer for college students who drink 0.5 liter of red wine before bedtime, as compared to students who do not drink alcohol before bedtime.
2. ○ The average brain wave activity is similar when comparing college students who drink 0.5 liter of red wine before bedtime and college students who drink no alcohol before bedtime.
3. ● The average brain wave activity is substantially shorter for college students who drink 0.5 liter of red wine before bedtime, as compared to students who do not drink alcohol before bedtime.
**Explanation:**
- The confidence interval (-10, 16) includes zero, which means there is no significant difference in average brain wave activity between the two groups. Therefore, the average brain wave activity is similar between the groups (statement 2). However, the image indicates statement 3 is selected, suggesting a common misconception or a need for a closer review of statistical interpretation.
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