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Do the three simple conditions hold in this case? Make a stemplot and use it to check the shape of the distribution.

Intermediate Algebra

19th Edition

ISBN:9780998625720

Author:Lynn Marecek

Publisher:Lynn Marecek

Chapter10: Exponential And Logarithmic Functions

Section10.3: Evaluate And Graph Logarithmic Functions

Problem 10.53TI: In 1906, San Francisco experienced an intense earthquake with a magnitude of 7.8 on the Richter...

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Question

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
micrograms per liter of wine (ug/L). The untrained noses of consumers may be less sensitive, however. The DMS odor
thresholds for 10 untrained students are given.
30
30
35
22
33
31
29
19
23
(a) Assume that the standard deviation of the odor threshold for untrained noses is known to be o = 7 ug/L.
To access the complete data set, click the link for your preferred software format:
Excel Minitab14-18 Minitab18+ Minitab18+ JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt!
Do the three simple conditions hold in this case? Make a stemplot and use it to check the shape of the distribution.
Choose the answer that best describes the stemplot.
No. Although this is a SRS and o is known, a stemplot shows that the distribution has many outliers and therefore cannot
be Normal.
No, we cannot be sure. Although the stemplot looks roughly Normal and o is known, these 10 students are not an SRS of
the population in general, and without any more information on how they were chosen, they may not even be an SRS of
the student population.
O Yes, since this is an SRS, a stemplot shows that the distribution is roughly symmetric with no outliers, and o is known.
O No. Although this is a SRS and o is known, a stemplot shows that the distribution is not symmetric and therefore cannot
be Normal.

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