Sulfur compounds cause "off-odors" in wine, so winemakers want to know the odor threshold, the lowest concentration of acompound that the human nose can detect. The odor threshold for dimethyl sulfide (DMS) in trained wine tasters is about 25micrograms per liter of wine (ug/L). The untrained noses of consumers may be less sensitive, however. The DMS odorthresholds for 10 untrained students are given.303035223331291923(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 cannotbe Normal.No, we cannot be sure. Although the stemplot looks roughly Normal and o is known, these 10 students are not an SRS ofthe population in general, and without any more information on how they were chosen, they may not even be an SRS ofthe 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 cannotbe Normal. (b) STATE: What is the average (mean) DMS odor threshold, u, for all untrained people?PLAN: Using the four-step process, give a 95% confidence interval for the mean DMS odor threshold among all students.SOLVE: We have assumed that we have a random sample and that the population from which we are sampling is Normal.Find x. (Enter your answer rounded to one decimal place.)µg/LFind the standard deviation, , of the sampling distribution of x. (Enter your answer rounded to four decimal places.)CONCLUDE: Choose the correct conclusion.O With 95% confidence, the mean sensitivity for all untrained people is between 27.56 to 33.24 ug/L.With 95% confidence, the mean sensitivity for all untrained people is between 28.07 to 32.74 µg/L.With 95% confidence, the mean sensitivity for all untrained people is between 25.06 to 33.74 µg/L.O With 95% confidence, the mean sensitivity for all untrained people is between 26.76 to 33.04 ug/L.ООО О

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Description: Sulfur compounds cause "off-odors" in wine, so winemakers want to know the odor threshold, the lowest concentration of acompound that the human nose can detect. The odor threshold for dimethyl sulfide (DMS) in trained wine tasters is about 25microgr

(a) A sample of 10 students is taken in the study. There is no information of how the sample of…

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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.

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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 2AGP

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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 (μg/l). The untrained noses of consumers may be less sensitive, however. Here are the DMS odor thresholds for 10 untrained students: 31 31 43 36 23 34 32 30 20 24 Give a 95% confidence interval for the mean DMS odor threshold among all students. Is there evidence that the mean threshold for untrained tasters is greater than 25 μg/l? State the hypotheses. Is there evidence that the mean threshold for untrained tasters is greater than 25 μg/l? What is the test statistic?
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 (?g/L ). The untrained noses of consumers may be less sensitive, however. The DMS odor thresholds for 10 untrained students are given. 30 30 42 35 22 33 31 29 19 23 (a) Assume that the standard deviation of the odor threshold for untrained noses is known to be ?=7?g/Lσ To access the complete data set, click the link for your preferred software format: Do the three simple conditions hold in this case? Make a stemplot and use it to check the shape of the distribution. (b) STATE: What is the average (mean) DMS odor threshold, ?μ , for all untrained people? PLAN: Using the four‑step process, give a 95%95% confidence interval for the mean DMS odor threshold among all students. SOLVE: We have assumed that we…
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 25micrograms per liter of wine (?g/L ). The untrained noses of consumers may be less sensitive, however. The DMS odor thresholds for 10 untrained students are given. 30 30 42 35 22 33 31 29 19 23 SOLVE: We have assumed that we have a random sample and that the population from which we are sampling is Normal. Find ?¯ . (Enter your answer rounded to one decimal place.) ?¯= ?g/? Find the standard deviation, ??√, of the sampling distribution of ?¯. (Enter your answer rounded to four decimal places.) ??√=
Sulfur compounds cause "off-odors" in wine, and 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 (µg/L). The untrained noses of consumers may be less sensitive, however. A set of DMS odor threshold data for 10 untrained students was analyzed. How sensitive are the untrained noses of students? You want to estimate the mean DMS odor threshold among all students, and you would be satisfied to estimate the mean to within ±0.25 with 95% confidence. The standard deviation of the odor threshold for untrained noses is known to be o = 8 micrograms per liter of wine. How large an SRS of untrained students do you need? Give your answer rounded up to the nearest whole number. n = Incorrect
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