Mathematics, 24.01.2020 23:31 vickygloom
Sulfur compounds cause "off-odors" in wine, so winemakers want to know the odor threshold, the lowest concentration of a compound that the human nose can detect. the odor threshold for dimethyl sulfide (dms) in trained wine tasters is about 25 μg/l (micrograms per liter). the untrained noses of consumers may have a higher threshold, however.
here are the dms odor thresholds for 10 untrained students:
30 30 42 35 22 33 31 29 19 23
assume that the standard deviation of the odor threshold for untrained noses is known to be σ = 7 μg/l.
(a) give a 95% ci for the mean dms odor threshold among all students.
(b) are you convinced that the mean odor threshold for students is higher than the published threshold, 25 μg/l? carry out a significance test with an α = 0.05 significance level to justify your answer.
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Sulfur compounds cause "off-odors" in wine, so winemakers want to know the odor threshold, the lowes...
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