Test the hypothesis Ho: μ = 0 versus Ha: 0, where is the mean difference between the left hippocampus volumes of twins discordant on schizophrenia. Please report the test statistic, the degrees of freedom, and the P-value. What do you conclude at 0.05 significance level?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
Are any physiological indicators associated with schizophrenia? Early studies, based largely on post-
mortem analysis, suggest that the sizes of certain areas of the brain may be different in persons afflicted
with schizophrenia than in others. Confounding variables in these studies, however, clouded the issue
considerably. In a 1990 article, researchers reported the results of a study that controlled for genetic
and socioeconomic differences by examining 15 pairs of identical twins, where one of the twins was
schizophrenic and the other was not. The twins were located through an intensive search through-
out Canada and the United States (Data from R: L. Suddath et al., "Anatomical Abnormalities in the Brains
of Monozygotic Twins Discordant for Schizophrenia," New England Journal of Medicine 322(12) (1990):789-93.). The
researchers used magnetic resonance imaging (MRI) to measure the volumes (in cm³) of several re-
gions and subregions inside the twins' brains. The table presents data based on the reported summary
statistics from one subregion, the left hippocampus.
Unaffected Affected diff
1.94
1.27 0.67
1.44
1.63 -0.19
1.56
1.47 0.09
1.58
1.39
0.19
2.06
1.93 0.13
1.66
1.26 0.40
1.75
1.71
0.04
1.77
1.67 0.10
1.78
1.28 0.50
1.92
1.85
0.07
1.25
1.02 0.23
1.93
1.34
0.59
2.04
2.02 0.02
1.62
1.59 0.03
2.08
1.97 0.11
Mean 1.7587
1.5600 0.1987
SD 0.2424 0.3013 0.2383
1
Transcribed Image Text:Are any physiological indicators associated with schizophrenia? Early studies, based largely on post- mortem analysis, suggest that the sizes of certain areas of the brain may be different in persons afflicted with schizophrenia than in others. Confounding variables in these studies, however, clouded the issue considerably. In a 1990 article, researchers reported the results of a study that controlled for genetic and socioeconomic differences by examining 15 pairs of identical twins, where one of the twins was schizophrenic and the other was not. The twins were located through an intensive search through- out Canada and the United States (Data from R: L. Suddath et al., "Anatomical Abnormalities in the Brains of Monozygotic Twins Discordant for Schizophrenia," New England Journal of Medicine 322(12) (1990):789-93.). The researchers used magnetic resonance imaging (MRI) to measure the volumes (in cm³) of several re- gions and subregions inside the twins' brains. The table presents data based on the reported summary statistics from one subregion, the left hippocampus. Unaffected Affected diff 1.94 1.27 0.67 1.44 1.63 -0.19 1.56 1.47 0.09 1.58 1.39 0.19 2.06 1.93 0.13 1.66 1.26 0.40 1.75 1.71 0.04 1.77 1.67 0.10 1.78 1.28 0.50 1.92 1.85 0.07 1.25 1.02 0.23 1.93 1.34 0.59 2.04 2.02 0.02 1.62 1.59 0.03 2.08 1.97 0.11 Mean 1.7587 1.5600 0.1987 SD 0.2424 0.3013 0.2383 1
Test the hypothesis Ho:
0 versus Ha:
0, where is the mean difference between the
left hippocampus volumes of twins discordant on schizophrenia. Please report the test statistic, the
degrees of freedom, and the P-value. What do you conclude at 0.05 significance level?
=
lague
Transcribed Image Text:Test the hypothesis Ho: 0 versus Ha: 0, where is the mean difference between the left hippocampus volumes of twins discordant on schizophrenia. Please report the test statistic, the degrees of freedom, and the P-value. What do you conclude at 0.05 significance level? = lague
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 1 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman