In this same passage on organic effect, answer the questions carefully to get the correct answers. The Organic EffectThis Exercise pertains to a 2015 study¹ which took a Swedish family that ate a conventional diet (non-organic), and then had them eatonly organic for two weeks. Pesticide concentrations for several different pesticides were measured in µg/g creatinine by testingmorning urine. Multiple measurements were taken for each person before the switch to organic foods, and then again afterparticipants had been eating organic for at least one week. The results are pretty compelling, and are summarized in a short video³which as of this writing has had over 30 million views online. The data are visualized in Figure 1 for eight different detected pesticides,and can be found in OrganicEffect. How do pesticide levels in the body differ after eating organicversus non-organic?Concentration (mg/g)051510 15Concentration (mcg/g crt)524DNon-Organic OrganicETUNon-Organic OrganicConcentration (mogigot)15Click here to access StatKar090+20150Concentration (mcg/g crt)0 503-PBANon-Organic OrganicMepiquatNon-Organic Organic20Click here for the dataset associated with this question.40 60Concentration (mogigot)0 20Concentration (mcg/g crt)Figure 1812524.518Figure 235DCNon-Organic OrganicPropamocarbNon Organic OrganicConcentration (nog/go)0 200 400 60030Concentration (mog/g crt)40 80 120UEating Organic and 3-PBA LevelsWe first study 3-PBA, a commonly used insecticide found in grains, fruits, and vegetables. How much higher are 3-PBA concentrationswhile not eating organic versus eating organic? A bootstrap distribution based on 1000 samples of the mean concentration before theswitch minus the mean concentration after switching to organic is shown in Figure 2.35▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬CCCNon-Organic OrganicTCP·-[]}+\Non Organic Organic (f) Does this interval provide evidence that concentrations of the pesticide 3-PBA are lower while eating organic?eTextbook and Media(g) Can we conclude that eating organic causes lower concentrations of 3-PBA?

Given information: The output of boxplots is given.

Answered: This Exercise pertains to a 2015 study…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Brink studied the effect of postural change on cardiovascular reactivity for a sample of healthy white and African American men and women. Change in systolic blood pressure (SBP) from supine to standing position was used as the measure of cardiac reactivity in a sample of 842 adults. Supine measurement of blood pressure was taken after participants had lain on an examination table for 15 minutes. Blood pressure was measured five times every 2 minutes using a preset automated blood pressure monitor, and the five measurements were averaged. Participants then stood up, and an additional five measurements were made over another 10-minute period and then averaged. Below is a table describing the characteristics of Brink’s sample. Characteristics of the Study Sample (N = 842) Sample Characteristic Frequency (N) Percentage or Mean (SD) Range Gender Female Male 408 434 48.5% 51.5% Age (years) 842 55.1 (5.3) 44–67 Race/ethnicity White, not Hispanic…
There have been many studies recently concerning coffee drinking and cholesterol level. While it is known that several coffee-bean components can elevate blood cholesterol level, it is thought that a new type of paper coffee filter may reduce the presence of some of these components in coffee. The effect of the new filter on cholesterol level will be studied over a 10-week period using 300 nonsmokers who each drink 4 cups of caffeinated coffee per day. Each of these 300 participants will be assigned to one of two groups: the experimental group, who will only drink coffee that has been made with the new filter, or the control group, who will only drink coffee that has been made with the standard filter. Each participant’s cholesterol level will be measured at the beginning and at the end of the study. Describe an appropriate method for assigning the subjects to the two groups so that each group will have an equal number of subjects. In this study, the researchers chose to include a…
There have been many studies recently concerning coffee drinking and cholesterol level. While it is known that several coffee-bean components can elevate blood cholesterol level, it is thought that a new type of paper coffee filter may reduce the presence of some of these components in coffee. The effect of the new filter on cholesterol level will be studied over a 10-week period using 300 nonsmokers who each drink 4 cups of caffeinated coffee per day. Each of these 300 participants will be assigned to one of two groups: the experimental group, who will only drink coffee that has been made with the new filter, or the control group, who will only drink coffee that has been made with the standard filter. Each participant’s cholesterol level will be measured at the beginning and at the end of the study. Which test would you conduct to determine whether the change in cholesterol level would be greater if people used the new filter rather than using the standard filter? Why would the…
Tardigrades, or water bears, are a type of micro-animal famous for their resilience. In examining the effects of radiation on organisms, an expert claimed that the amount of gamma radiation needed to sterilize a colony of tardigrades no longer has a mean of 900 Gy (grays). (For comparison, humans cannot withstand more than 10 Gy .) A study was conducted on a sample of 27 randomly selected tardigrade colonies, finding that the amount of gamma radiation needed to sterilize a colony had a sample mean of 907 Gy , with a sample standard deviation of 17 Gy . Assume that the population of amounts of gamma radiation needed to sterilize a colony of tardigrades is approximately normally distributed. Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the 0.05 level of significance, to support the claim that μ , the mean amount of gamma radiation needed to sterilize a colony of tardigrades, is not equal to 900…
Tardigrades, or water bears, are a type of micro-animal famous for their resilience. In examining the effects of radiation on organisms, an expert claimed that the amount of gamma radiation needed to sterilize a colony of tardigrades no longer has a mean of 900 Gy (grays). (For comparison, humans cannot withstand more than 10 Gy .) A study was conducted on a sample of 27 randomly selected tardigrade colonies, finding that the amount of gamma radiation needed to sterilize a colony had a sample mean of 907 Gy , with a sample standard deviation of 17 Gy . Assume that the population of amounts of gamma radiation needed to sterilize a colony of tardigrades is approximately normally distributed. Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the 0.05 level of significance, to support the claim that μ , the mean amount of gamma radiation needed to sterilize a colony of tardigrades, is not equal to 900…
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In a recent study, investigators were interested in examining the association between blood glucose concentration at hospital admission and mortality in the hospital among patients with Sepsis in 3 Ugandan hospitals. Patients were followed from admission to the hospital until the end of the study. The study population included 418 admitted adult patients. Among the 280 patients with hyperglycemia (defined as a glucose concentration of >6.1 mmol/L), 80 died within the hospital from severe sepsis. Among the 138 patients with hypoglycemia (defined as a glucose concentration of <4.4 mmol/L), 30 died within the hospital from severe sepsis. Assume there is minimal loss to follow-up and no competing risks. a.Fill out a 2 x 2 table based on the description provided above. Label your exposure and outcome, and provide respective totals based on the study design.
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An analysis was conducted by the Statistics Consulting Center atVirginia Polytechnic Institute and State University in which acertain treatment was applied to a set of tree stumps. The chemicalGarlon was used the with the purpose of regenerating the roots ofthe stumps. A spray was used with four levels of GarlonPage 23 of 23concentration. After a period of time the height of the shoots wasobserved. Does the concentration of Garlon has a significantimpact on the height of the shoots? Use α = 0.05.

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