What is the most appropriate test to determine if the three feed additives resulted to different mean cortisol level of chickens at 5% level of significance? Justify your answer.

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
Answer letter a, use image two as a guide to determine the test to be used and provide a justification
1. CHICKEN FEED ADDITIVE STUDY
Wilk-Shapiro Test for Normality
data:
A1
data:
A2
data:
АЗ
W = 0.98999
W = 0.87485
p-value = 0.2866
W = 0.97079
p-value = 0.9797
p-value = 0.8803
Bartlett test of homogeneity of variances
cortisol by additive
= 0.39956, df = 2, p-value
data:
Bartlett's K-squared
= 0.8189
Analysis of Variance
Pr(>F)
Df Sum Sq Mean Sq F value
2.700
additive
1.3501
14.24 0.000678 ***
Residuals
12
1.137
0.0948
Signif. codes:
0 '*** ! 0.001 '** !
0.01 '*' 0.05 '.' 0.1 ' ' 1
Kruskal-Wallis Rank Sum Test
data:
cortisol by additive
Kruskal-Wallis chi-squared
9.42, df = 2, p-value = 0.009005
Transcribed Image Text:1. CHICKEN FEED ADDITIVE STUDY Wilk-Shapiro Test for Normality data: A1 data: A2 data: АЗ W = 0.98999 W = 0.87485 p-value = 0.2866 W = 0.97079 p-value = 0.9797 p-value = 0.8803 Bartlett test of homogeneity of variances cortisol by additive = 0.39956, df = 2, p-value data: Bartlett's K-squared = 0.8189 Analysis of Variance Pr(>F) Df Sum Sq Mean Sq F value 2.700 additive 1.3501 14.24 0.000678 *** Residuals 12 1.137 0.0948 Signif. codes: 0 '*** ! 0.001 '** ! 0.01 '*' 0.05 '.' 0.1 ' ' 1 Kruskal-Wallis Rank Sum Test data: cortisol by additive Kruskal-Wallis chi-squared 9.42, df = 2, p-value = 0.009005
1. CHICKEN FEED ADDITIVE STUDY
Instruction: For all test of hypotheses, write Ho and Ha in words, specify test
procedure, show computed test statistic with gf (if applicable), p-value, decision
and conclusion.
A study was conducted to determine the effect of different types of feed additives
(A1, A2, A3) in the cortisol level (ng/ml) among chickens. Fifteen chickens were
randomly assigned to the three feed additives. The cortisol level (ng/ml) of the
chickens was then measured after four weeks.
a. What is the most appropriate test to determine if the three feed additives
resulted to different mean cortisol level of chickens at 5% level of significance?
Justify your answer.
Test to be used:
Justification (provide test of hypothesis if you must):
Transcribed Image Text:1. CHICKEN FEED ADDITIVE STUDY Instruction: For all test of hypotheses, write Ho and Ha in words, specify test procedure, show computed test statistic with gf (if applicable), p-value, decision and conclusion. A study was conducted to determine the effect of different types of feed additives (A1, A2, A3) in the cortisol level (ng/ml) among chickens. Fifteen chickens were randomly assigned to the three feed additives. The cortisol level (ng/ml) of the chickens was then measured after four weeks. a. What is the most appropriate test to determine if the three feed additives resulted to different mean cortisol level of chickens at 5% level of significance? Justify your answer. Test to be used: Justification (provide test of hypothesis if you must):
Expert Solution
steps

Step by step

Solved in 3 steps

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