STAT.F/BUS.+ECON.-MYLABSPLUS ACCESS CAR
13th Edition
ISBN: 9780135411711
Author: MCCLAVE
Publisher: PEARSON
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Textbook Question
Chapter 15.6, Problem 15.59ACB
Peer mentor training at a firm. Refer to the Journal of Menegerial issues (Spring 2008) study of the impact of peer mentor training at a large software company, Exercise 9.55 (p. 540). Recall that participants volunteered to attend a 1-day peer mentor training sess1on. The trainee's level of competence 1n peer mentoring (measured on a 7-point scale) was measured at three different times in the study: 1 week before training, 2 days after training, and 2 months after training. Data (simulated) for 15 trainees are displayed in the accompanying table. A Minitab non parametric randomized block analysis is also provided below to compare the competence level distributions of the three time periods.
- a. Locate the rank sums on the printout.
- b. Use the rank sums to find the Friedman Fr statistic.
- c. Locate the test statistic and associated p-value on the printout.
- d. Conduct the test and give the appropriate conclusion in the words of the problem.
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A deficiency of the trace element selenium in the diet can negatively impact growth, immunity, muscle and neuromuscular function, and fertility. The introduction of selenium supplements to dairy cows is justified when pastures have low selenium levels. Authors of a research paper supplied the following data on milk selenium concentration (mg/L) for a sample of cows given a selenium supplement (the treatment group) and a control sample given no supplement, both initially and after a 9-day period.
Initial Measurement
Treatment
Control
11.2
9.1
9.6
8.7
10.1
9.7
8.5
10.8
10.3
10.9
10.6
10.6
11.7
10.1
9.7
12.3
10.8
8.8
10.3
10.4
10.4
10.9
11.2
10.4
9.4
11.6
10.6
10.9
10.7
8.4
After 9 Days
Treatment
Control
138.3
9.3
104
8.7
96.4
8.7
89
10.1
88
9.6
103.8
8.6
147.3
10.2
97.1
12.2
172.6
9.3
146.3
9.5
99
8.2
122.3
8.9
103
12.5
117.8
9.1
121.5
93
(a)
Use the given data for the treatment group to determine if there…
A deficiency of the trace element selenium in the diet can negatively impact growth, immunity, muscle and neuromuscular function, and fertility. The introduction of selenium supplements to dairy cows is justified when pastures have low selenium levels. Authors of a research paper supplied the following data on milk selenium concentration (mg/L) for a sample of cows given a selenium supplement (the treatment group) and a control sample given no supplement, both initially and after a 9-day period.
Initial Measurement
Treatment
Control
11.3
9.1
9.7
8.7
10.1
9.7
8.5
10.8
10.4
10.9
10.7
10.6
11.8
10.1
9.8
12.3
10.6
8.8
10.4
10.4
10.2
10.9
11.3
10.4
9.2
11.6
10.7
10.9
10.8
8.2
After 9 Days
Treatment
Control
138.3
9.4
104
8.8
96.4
8.8
89
10.1
88
9.7
103.8
8.7
147.3
10.3
97.1
12.3
172.6
9.4
146.3
9.5
99
8.3
122.3
8.9
103
12.5
117.8
9.1
121.5
93
(a)
Use the given data for the treatment group to determine if…
A deficiency of the trace element selenium in the diet can negatively impact growth, immunity, muscle and neuromuscular function, and fertility. The introduction of selenium supplements to dairy cows is justified when pastures have low selenium levels. Authors of a research paper supplied the following data on milk selenium concentration (mg/L) for a sample of cows given a selenium supplement (the treatment group) and a control sample given no supplement, both initially and after a 9-day period.
Initial Measurement
Treatment
Control
11.4
9.1
9.6
8.7
10.1
9.7
8.5
10.8
10.2
10.9
10.6
10.6
11.9
10.1
9.9
12.3
10.7
8.8
10.2
10.4
10.3
10.9
11.4
10.4
9.3
11.6
10.6
10.9
10.9
8.3
After 9 Days
Treatment
Control
138.3
9.2
104
8.9
96.4
8.9
89
10.1
88
9.6
103.8
8.6
147.3
10.4
97.1
12.4
172.6
9.2
146.3
9.5
99
8.4
122.3
8.8
103
12.5
117.8
9.1
121.5
93
(a)
Use the given data for the treatment group to determine if…
Chapter 15 Solutions
STAT.F/BUS.+ECON.-MYLABSPLUS ACCESS CAR
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