Suppose the caffeine content in a shot of espresso is around 15 mg and distribution of caffeine content in shots of espresso is normal with o = 1.5mg. (a) How large a sample of espresso shots would you need to estimate u to within +1mgwith 95% confidence? (b) How large a sample of espresso shots would you need to estimate u to within +2mgwith 99% confidence?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Suppose the caffeine content in a shot of espresso is around 15 mg and distribution of
caffeine content in shots of espresso is normal with o =
1.5mg.
(a) How large a sample of espresso shots would you need to estimate u to within
+1mgwith 95% confidence?
(b) How large a sample of espresso shots would you need to estimate u to within
±2mgwith 99% confidence?
Transcribed Image Text:Suppose the caffeine content in a shot of espresso is around 15 mg and distribution of caffeine content in shots of espresso is normal with o = 1.5mg. (a) How large a sample of espresso shots would you need to estimate u to within +1mgwith 95% confidence? (b) How large a sample of espresso shots would you need to estimate u to within ±2mgwith 99% confidence?
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