A researcher is interested in whether contaminants discharged into a river reduce invertebrate biomass (g/m^2). Biomass is sampled from several sites downstream of a source of contaminants and several upstream sites. The raw effect size is calculated as mean biomass of upstream sites – mean biomass of downstream sites. The graph below represents a post hoc power analysis of the study to detect the smallest effect the researchers deems to be of biological interest. - dt(x, 11) 0.4 0.3 0.2 0.1 0.0 -4 -2 B 0 X 8 α 2 4.
A researcher is interested in whether contaminants discharged into a river reduce invertebrate biomass (g/m^2). Biomass is sampled from several sites downstream of a source of contaminants and several upstream sites. The raw effect size is calculated as mean biomass of upstream sites – mean biomass of downstream sites. The graph below represents a post hoc power analysis of the study to detect the smallest effect the researchers deems to be of biological interest. - dt(x, 11) 0.4 0.3 0.2 0.1 0.0 -4 -2 B 0 X 8 α 2 4.
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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What does the dotted curve represent in the graph?
Transcribed Image Text:A researcher is interested in whether contaminants discharged into a river reduce
invertebrate biomass (g/m^2). Biomass is sampled from several sites downstream of
a source of contaminants and several upstream sites. The raw effect size is calculated
as mean biomass of upstream sites - mean biomass of downstream sites. The graph
below represents a post hoc power analysis of the study to detect the smallest effect
the researchers deems to be of biological interest.
dt(x, 11)
0.4
0.3
0.2
0.1
0.0
T
-4
-2
В
0
X
α
2
4
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