ASQ
CQE · Question #118
Given the data below is normally distributed, and the population standard deviation is 3.1, what is the 90% confidence interval for the mean? 22, 23, 19, 17, 29, 25
The correct answer is B. 20.42 - 24.59. See the full explanation below for the reasoning.
Statistical Tools and Techniques
Question
Given the data below is normally distributed, and the population standard deviation is 3.1, what is the 90% confidence interval for the mean? 22, 23, 19, 17, 29, 25
Options
- A20.88 - 24.12
- B20.42 - 24.59
- C21.65 - 23.35
- D17.4 - 27.6
How the community answered
(41 responses)- A10% (4)
- B73% (30)
- C12% (5)
- D5% (2)
Topics
#confidence interval#z-distribution#known standard deviation#mean estimation
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