Solution Found!

Statistics / Probability and Statistics for Engineering and the Sciences 9 / Chapter 1.3 / Problem 34

Probability and Statistics for Engineering and the Sciences | 9th Edition | ISBN: 9781305251809 | Authors: Jay L. Devore

Change Question

Exposure to microbial products, especially endotoxin,may

Chapter 1, Problem 34

(choose chapter or problem)

Get Unlimited Answers

QUESTION:

Exposure to microbial products, especially endotoxin,may have an impact on vulnerability to allergic diseasesThe article Dust Sampling Methods for EndotoxinAn Essential, But Underestimated Issue (Indoor Air,2006: 2027) considered various issues associated withdetermining endotoxin concentration. The following dataon concentration (EU/mg) in settled dust for one sampleof urban homes and another of farm homes was kindlysupplied by the authors of the cited article.U: 6.0 5.0 11.0 33.0 4.0 5.0 80.0 18.0 35.0 17.0 23.0F: 4.0 14.0 11.0 9.0 9.0 8.0 4.0 20.0 5.0 8.9 21.09.2 3.0 2.0 0.3a. Determine the sample mean for each sample. Howdo they compare?b. Determine the sample median for each sample. Howdo they compare? Why is the median for the urbansample so different from the mean for that sample?c. Calculate the trimmed mean for each sample bydeleting the smallest and largest observation. Whatare the corresponding trimming percentages? Howdo the values of these trimmed means compare to thecorresponding means and medians?

Questions & Answers

QUESTION:

Exposure to microbial products, especially endotoxin,may have an impact on vulnerability to allergic diseasesThe article Dust Sampling Methods for EndotoxinAn Essential, But Underestimated Issue (Indoor Air,2006: 2027) considered various issues associated withdetermining endotoxin concentration. The following dataon concentration (EU/mg) in settled dust for one sampleof urban homes and another of farm homes was kindlysupplied by the authors of the cited article.U: 6.0 5.0 11.0 33.0 4.0 5.0 80.0 18.0 35.0 17.0 23.0F: 4.0 14.0 11.0 9.0 9.0 8.0 4.0 20.0 5.0 8.9 21.09.2 3.0 2.0 0.3a. Determine the sample mean for each sample. Howdo they compare?b. Determine the sample median for each sample. Howdo they compare? Why is the median for the urbansample so different from the mean for that sample?c. Calculate the trimmed mean for each sample bydeleting the smallest and largest observation. Whatare the corresponding trimming percentages? Howdo the values of these trimmed means compare to thecorresponding means and medians?

ANSWER:

Step 1 of 5

(a) The sample mean of observations is given by

Therefore sample mean for the first sample is,

Study Tools You Might Need

Chapter: 3 Problem: 3.69

Chemistry 11
The annual production of sulfur dioxide from burning coal and fossil fuels, auto exhaust, and other sources is about 26 million tons. The equation for the reaction is \(\mathrm{S}(s)+\mathrm{O}_{2}(g) \longrightarrow \mathrm{SO}_{2}(g)\) How much sul

Chapter: 2 Problem: 2.5

Chemistry 9
Name each binary compound. a. CsF b. AlCl3 c. LiH

Chapter: 1 Problem: 16

Anatomy & Physiology 1
C.J. is stuck in her car during a bitterly cold blizzard. Her body responds to the cold by ________. a. increasing the blood to her hands and feet b. becoming lethargic to conserve heat c. breaking down stored energy d. significantly increasing blood oxygen levels

Chapter: 1 Problem: 1

Principles of Economics 6
Give three examples of important trade-offs that you face in your life.

Chapter: 2 Problem: 2

Campbell Biology in Focus 2
Write an equation that uses the products of photosynthesis as reactants and the reactants of photosynthesis as products. Add energy as another product. This new equation describes a process that occurs in your cells. Describe this equation in words. How does this equation relate to breathing?

Chapter: 5 Problem: 5-11

Psychology 12
What are the four main parenting styles?

Chapter: 6 Problem: 1

Biology: The Dynamic Science 5
According to the Oparin-haldane hypothesis, the atmosphere when life began was believed to be composed primarily of the following substances that contain the maximum number of electrons:

Chapter: 5 Problem: 5.96

Chemistry for today : general, organic, and biochemistry 9
In the reaction \(4 \mathrm{Al}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{Al}_{2} \mathrm{O}_{3}\), how many grams of \(\mathrm{O}_{2}\) are needed to completely react with 1.5 moles of Al? a. 24 g b. 36 g c. 48 g d. 60 g

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

×

Register

Sign up for access to all content on our site!

Or login if you already have an account