This Exercise pertains to a 2015 study¹ which took a Swedish family that ate a conventional diet (non-organic), and then had them eat only organic for two weeks. Pesticide concentrations for several different pesticides were measured in ug/g creatinine by testing morning urine. Multiple measurements were taken for each person before the switch to organic foods, and then again after participants had been eating organic for at least one week. The results are pretty compelling, and are summarized in a short video³ which 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 Organic Effect. How do pesticide levels in the body differ after eating organic versus non-organic? Concentration (ncg/g cit) 0 5 15 25 O 24D Non-Organic Organic 1 Increase F ETU Non-Organic Organic (a) Increase the sample size. (b) Simulate more bootstrap samples. Decrease Remain the same Concentration (mcg/g crt) 80 3-PBA Non-Organic Organic Click here for the dataset associated with this question. (c) Increase the confidence level from 95% to 99%. Mepiquat Non-Organic Organic Figure 1 35DC Non-Organic Organic Propamocarb Non-Organic Organic Investigating the Width of a Confidence Interval Generally confidence intervals utilizing the paired structure of the data will be narrower than confidence intervals ignoring this structure (this is the primary reason for pairing). How else could we change the width of the confidence interval? More specifically, for each of the following changes, would the width of the confidence interval likely increase, decrease, or remain the same? 600 CCC Non-Organic Organic TCP Non-Organic Organic P., Sandberg, J., and Cousins, A.P. (2015). "Human exposure to pesticides from food: A pilot study," IVL Swedish Institute. https://www.coop.se/PageFiles/429812/Coop%20Ekoeffekten_Report%20ENG.pdf, January 2015.
This Exercise pertains to a 2015 study¹ which took a Swedish family that ate a conventional diet (non-organic), and then had them eat only organic for two weeks. Pesticide concentrations for several different pesticides were measured in ug/g creatinine by testing morning urine. Multiple measurements were taken for each person before the switch to organic foods, and then again after participants had been eating organic for at least one week. The results are pretty compelling, and are summarized in a short video³ which 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 Organic Effect. How do pesticide levels in the body differ after eating organic versus non-organic? Concentration (ncg/g cit) 0 5 15 25 O 24D Non-Organic Organic 1 Increase F ETU Non-Organic Organic (a) Increase the sample size. (b) Simulate more bootstrap samples. Decrease Remain the same Concentration (mcg/g crt) 80 3-PBA Non-Organic Organic Click here for the dataset associated with this question. (c) Increase the confidence level from 95% to 99%. Mepiquat Non-Organic Organic Figure 1 35DC Non-Organic Organic Propamocarb Non-Organic Organic Investigating the Width of a Confidence Interval Generally confidence intervals utilizing the paired structure of the data will be narrower than confidence intervals ignoring this structure (this is the primary reason for pairing). How else could we change the width of the confidence interval? More specifically, for each of the following changes, would the width of the confidence interval likely increase, decrease, or remain the same? 600 CCC Non-Organic Organic TCP Non-Organic Organic P., Sandberg, J., and Cousins, A.P. (2015). "Human exposure to pesticides from food: A pilot study," IVL Swedish Institute. https://www.coop.se/PageFiles/429812/Coop%20Ekoeffekten_Report%20ENG.pdf, January 2015.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
Related questions
Question
Transcribed Image Text:This Exercise pertains to a 2015 study¹ which took a Swedish family that ate a conventional diet (non-organic), and then had them eat
only organic for two weeks. Pesticide concentrations for several different pesticides were measured in µg/g creatinine by testing
morning urine. Multiple measurements were taken for each person before the switch to organic foods, and then again after
participants had been eating organic for at least one week. The results are pretty compelling, and are summarized in a short video³
which 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 Organic Effect. How do pesticide levels in the body differ after eating organic versus non-organic?
Concentration (mcg/g crt)
Concentration (mcg/g crt)
0 5 10 15
24D
Non-Organic Organic
ETU
Non-Organic Organic
1 Increase
(a) Increase the sample size.
(b) Simulate more bootstrap samples.
Decrease
Remain the same
Concentration (mcg/g crt)
Concentration (mcg/g crt)
+02 0
O
3-PBA
Non-Organic Organic
Click here for the dataset associated with this question.
(c) Increase the confidence level from 95% to 99%.
Mepiquat
Non-Organic Organic
Concentration (mcg/g crt)
0 20 40 60
Concentration (mcg/g crt)
0 2 4 6 8
Figure 1
35DC
Non-Organic Organic
Propamocarb
Non-Organic Organic
Concentration (mcg/g crt)
0 200 400 600
Concentration (mcg/g crt)
0 40 80 120
Investigating the Width of a Confidence Interval
Generally confidence intervals utilizing the paired structure of the data will be narrower than confidence intervals ignoring this
structure (this is the primary reason for pairing). How else could we change the width of the confidence interval? More specifically, for
each of the following changes, would the width of the confidence interval likely increase, decrease, or remain the same?
▬▬▬▬▬▬▬▬▬▬
CCC
Non-Organic Organic
TCP
Non-Organic Organic
P., Sandberg, J., and Cousins, A.P. (2015). "Human exposure to pesticides from food: A pilot study," IVL Swedish
Institute. https://www.coop.se/PageFiles/429812/Coop%20Ekoeffekten_Report%20ENG.pdf, January 2015.
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