If r = -0.58 and n = 40, what is our statistic and critical value?
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 31EQ
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Q#1: If r = -0.58 and n = 40, what is our statistic and critical value?
![What is the appropriate conclusion for this analysis?
O Telomere length and chronicity are positively associated, but there is a lot of variability in the data
O Telomere length and chronicity are negatively associated, and there is little variability in the data
O Telomere length and chronicity are not significantly associated, and there is a lot of variability in the data
O Telomere length and chronicity are not significantly associated, but there is little variability in the data
O Telomere length and chronicity are negatively associated, but there is a decent amount of variability in the
data
If we were to increase the sample size of the previous study, which of the following patterns
might we expect to see?
O insignificant association
O a stronger correlation coefficient
O a weaker R2 value
O a less extreme statistic](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7a6c5d3b-e5b8-4c83-98f3-0eb4165b9968%2F2eee89a4-b2fe-46b8-85c3-e19fe9f1a9aa%2Ffl4tckt_processed.jpeg&w=3840&q=75)
Transcribed Image Text:What is the appropriate conclusion for this analysis?
O Telomere length and chronicity are positively associated, but there is a lot of variability in the data
O Telomere length and chronicity are negatively associated, and there is little variability in the data
O Telomere length and chronicity are not significantly associated, and there is a lot of variability in the data
O Telomere length and chronicity are not significantly associated, but there is little variability in the data
O Telomere length and chronicity are negatively associated, but there is a decent amount of variability in the
data
If we were to increase the sample size of the previous study, which of the following patterns
might we expect to see?
O insignificant association
O a stronger correlation coefficient
O a weaker R2 value
O a less extreme statistic
![Does stress age you? As part of an investigation, Epel et al. (2004). E measured telomere length
in blood mononuclear cells of healthy premenopausal women, each of whom was the biological
mother and caregiver of a chronically ill child. Telomeres are complexes of DNA and protein that
cap chromosomal ends. They tend to shorten with cell divisions and with advancing age. A scatter
plot of the data is shown below. Telomere length is measured as a ratio compared to a standard.
Chronicity is the number of years since the child's diagnosis. The data in the scatter plot can be
summarized as follows
1.8-
Telomere length (ratio)
1.6-
1.4-
1.2-
1.0-
N.
2
3030
4
6
8
Chronicity (years)
10
12](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7a6c5d3b-e5b8-4c83-98f3-0eb4165b9968%2F2eee89a4-b2fe-46b8-85c3-e19fe9f1a9aa%2Fbuynwqi_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Does stress age you? As part of an investigation, Epel et al. (2004). E measured telomere length
in blood mononuclear cells of healthy premenopausal women, each of whom was the biological
mother and caregiver of a chronically ill child. Telomeres are complexes of DNA and protein that
cap chromosomal ends. They tend to shorten with cell divisions and with advancing age. A scatter
plot of the data is shown below. Telomere length is measured as a ratio compared to a standard.
Chronicity is the number of years since the child's diagnosis. The data in the scatter plot can be
summarized as follows
1.8-
Telomere length (ratio)
1.6-
1.4-
1.2-
1.0-
N.
2
3030
4
6
8
Chronicity (years)
10
12
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