ASQ
CRE · Question #327
Six independent samples are taken of smokestack gas. The mean value of a critical pollutant was 30.2 ppm for the six samples, with a standard deviation s = 5 ppm. Assuming that the samples were…
The correct answer is A. 30.2 ?4.11ppm. You've hit your weekly limit · resets 5am (America/New_York)
Data Collection and Use
Question
Six independent samples are taken of smokestack gas. The mean value of a critical pollutant was 30.2 ppm for the six samples, with a standard deviation s = 5 ppm. Assuming that the samples were taken at random times, what is the 90% confidence interval for the proportion of the critical pollutant in the smokestack gas?
Options
- A30.2 ?4.11ppm
- B30.2 ?3.96 ppm
- C30.2 ?4.00 ppm
- D30.2 ?3.36 ppm
How the community answered
(57 responses)- A75% (43)
- B5% (3)
- C16% (9)
- D4% (2)
Explanation
You've hit your weekly limit · resets 5am (America/New_York)
Topics
#confidence interval#statistical sampling#t-distribution#mean estimation
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