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For Numbers 24 to 26: Three veterinary x-ray equipment (A, B, and C) are being tested for efficiency in accurately measuring thorax thickness (in cm) of dogs. Twelve dogs of the same breed and age were randomly assigned to each of the x-ray equipment (i.e., 4 dogs per equipment). The difference in the recorded value of the machine from the reading of a standard and commercially available x- ray equipment was recorded. R-outputs are provided below:

For Numbers 24 to 26: Three veterinary x-ray equipment (A, B, and C) are being tested for efficiency in accurately measuring thorax thickness (in cm) of dogs. Twelve dogs of the same breed and age were randomly assigned to each of the x-ray equipment (i.e., 4 dogs per equipment). The difference in the recorded value of the machine from the reading of a standard and commercially available x- ray equipment was recorded. R-outputs are provided below:

MATLAB: An Introduction with Applications
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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For Numbers 24 to 26: Three veterinary x-ray equipment (A, B, and C) are being tested for efficiency in accurately measuring thorax thickness (in cm) of dogs. Twelve dogs of the same breed and age were randomly assigned to each of the x-ray equipment (i.e., 4 dogs per equipment). The difference in the recorded value of the machine from the reading of a standard and commercially available x- ray equipment was recorded. R-outputs are provided below: equipment: A data: diff_reading W = 0.91474 p-value = 0.5079 Wilk-Shapiro Test for Normality equipment: B data: diff reading W = 0.90886 p-value = 0.4764 equipment Residuals Bartlett test of homogeneity of variances data: diff_reading by equipment Bartlett's K-squared = 2.712, df 2, p-value Df Sum Sq 2 0.5887 9 0.6588 Signif. codes: equipment: C data: diff_reading W = 0.95239 p-value = 0.7311 = Analysis of Variance Mean Sq F value Pr (>F) 0.2944 4.021 0.0565. 0.0732 1***1 0 0.2577 *' 0.001 '**' 0.01 *** 0.05 '.' 0.1 W 1
Transcribed Image Text:For Numbers 24 to 26: Three veterinary x-ray equipment (A, B, and C) are being tested for efficiency in accurately measuring thorax thickness (in cm) of dogs. Twelve dogs of the same breed and age were randomly assigned to each of the x-ray equipment (i.e., 4 dogs per equipment). The difference in the recorded value of the machine from the reading of a standard and commercially available x- ray equipment was recorded. R-outputs are provided below: equipment: A data: diff_reading W = 0.91474 p-value = 0.5079 Wilk-Shapiro Test for Normality equipment: B data: diff reading W = 0.90886 p-value = 0.4764 equipment Residuals Bartlett test of homogeneity of variances data: diff_reading by equipment Bartlett's K-squared = 2.712, df 2, p-value Df Sum Sq 2 0.5887 9 0.6588 Signif. codes: equipment: C data: diff_reading W = 0.95239 p-value = 0.7311 = Analysis of Variance Mean Sq F value Pr (>F) 0.2944 4.021 0.0565. 0.0732 1***1 0 0.2577 *' 0.001 '**' 0.01 *** 0.05 '.' 0.1 W 1
25. Which of the following is(are) TRUE? 1. Kruskal-Wallis Rank Sum Test is more appropriate to be used. II. At 8% level of significance, the three equipment have the same average difference in recorded thorax thickness. A. I only B. II only C. Both I and II 26. The study was repeated, but with increased sample size, and it was concluded that at least one equipment led to a different average difference in the recorded thorax thickness. The summary of the pair-wise comparison in dot notation is provided below. Equipment Mean Summary 1.2025 0.925 0.66 B A 1 D. Neither I nor !! Which of the following is(are) TRUE based on the summary?
Transcribed Image Text:25. Which of the following is(are) TRUE? 1. Kruskal-Wallis Rank Sum Test is more appropriate to be used. II. At 8% level of significance, the three equipment have the same average difference in recorded thorax thickness. A. I only B. II only C. Both I and II 26. The study was repeated, but with increased sample size, and it was concluded that at least one equipment led to a different average difference in the recorded thorax thickness. The summary of the pair-wise comparison in dot notation is provided below. Equipment Mean Summary 1.2025 0.925 0.66 B A 1 D. Neither I nor !! Which of the following is(are) TRUE based on the summary?
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