Samples of cream from each of 10 dairies (A to J) are each divided into two portions. One portion from each is sent to Labratory I and the other to Labratory II, for bacterium counts. The counts (thousands bacteria/ml) are Lab I Lab II 11.8 11.4 14.5 15.6 14.8 15.1 15.4 15 12.3 12.2 13.2 14.3 11.5 12.3 13.7 14.7
Samples of cream from each of 10 dairies (A to J) are each divided into two portions. One portion from each is sent to Labratory I and the other to Labratory II, for bacterium counts. The counts (thousands bacteria/ml) are Lab I Lab II 11.8 11.4 14.5 15.6 14.8 15.1 15.4 15 12.3 12.2 13.2 14.3 11.5 12.3 13.7 14.7
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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Samples of cream from each of 10 dairies (A to J) are each divided into two portions. One portion from
each is sent to Labratory I and the other to Labratory II, for bacterium counts. The counts (thousands
bacteria/ml) are
Lab I Lab II
11.8
11.4
14.5 15.6
14.8
15.1
15.4
15
12.3 12.2
13.2
14.3
11.5 12.3
13.7
14.7
12.1 12.5
11.8
12.5
Use the Wilcoxon signed-rank test to assess the evidence for any consistent difference between labratories
for subsamples from the same dairy. Calculate differences as Lab II - Lab I.
What is the sum of the negative ranks (W)?
What is the sum of the positive ranks (W*)?
What type of test is this? Select an answer
What is the test statistic W?
These are the critical values for a 1-tailed Wilcoxon Signed Rank test for n=10
0.001 0.005 0.01 0.025 0.05 0.1 0.2
54
Alpha Level
Critical Value
51
49
46
44
40 36
< Previous
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APR
3
tv.il/
A
R
W
Transcribed Image Text:What type of test is this? Select an answer
What is the test statistic W?
These are the critical values for ✓ Select an answer
0.001 0
54
p-value > 0.4
0.2 < p-value < 0.4
0.1 < p-value < 0.2
0.05 <p-value < 0.1
0.02<p-value < 0.05
0.01 < p-value < 0.02
0.002<p-value < 0.01
p-value < 0.002
Alpha Level
Critical Value
What is the p-value for this testi
< Previous
APR
3
tvill/
Rank test for n=10
0.1
0.2
40 36
4
A
MacBook Pro
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