Answered: 1.“Effects of Short-Term…

Name: 1.“Effects of Short-Term Supplementation with Selenised Yeast on Milk
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Description: 1.“Effects of Short-Term Supplementation with Selenised Yeast on Milk Production and Composition of Lactating Cows”(Australian Journal of Dairy Technology, [2004]: 199-203) supplied the following data on milk selenium concentration (mg/L) for a sampl

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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1.“Effects of Short-Term Supplementation with Selenised Yeast on Milk Production and Composition of Lactating Cows”(Australian Journal of Dairy Technology, [2004]: 199-203) supplied the following data on milk selenium concentration (mg/L) for a sample of cows given seleniumsupplement (the treatment group) and a sample of cows given no supplement (the control group). The measurements of selenium were taken initally and again after a 9-day period. The study was conducted becausea deficiency of the trace element selenium in the diet can negatively impact growth, immunity, muscle and neuromuscular function, and fertility. The production of selenium supplements to dairy cows is justified when pastures have low selenium levels.

data is attached

a.Use the given data for the treatment group to determine if there is sufficient evidenceto conclude that the mean selenium concentration is greater after 9 days of the selenium supplement.

b.Are the data for the cows in the control group consistent with the hypothesis of no significant change in mean selenium concentration over the 9-day period?

c.Would you use the paired t-test to determineif there was a significant difference in the initial mean selenium concentration for the control group and the treatment group? Explain why or why not.

Initial Measurement
After 9 Days
Treatment
Control
Treatment
Control
11.4
9.1
138.3
9.3
9.6
S.7
104.0
S.S
10.1
9.7
96.4
8.8
8.5
10.8
89.0
10.1
10.3
10.9
SS.0
9.6
10.6
10.6
103.8
8.6
11.8
10.1
147.3
10.4
9.8
12.3
97.1
12.4
10.9
8.8
172.6
9.3
10.3
10.4
146.3
9.5
10.2
10.9
99.0
8.4
11.4
10.4
122.3
8.7
9.2
11.6
103.0
12.5
10.6
10.9
117.8
9.1
10.8
121.5
8.2
93.0

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