Question
EverRunIncorporated produces treadmills for use in exercise clubs and recreation centers. The treadmill motors are purchased from an outside vendor. Currently, EverRunis considering which motor
EverRunIncorporated produces treadmills for use in exercise clubs and recreation centers. The treadmill motors are purchased from an outside vendor. Currently, EverRunis considering which motor to include in its new ER 1500 series. Three potential suppliers have been identified: Venetti, Madison, and Edison. EverRunhas decided to make its decision based on how long a motor operates at a high level of speed and incline before it fails. A random sample of motors is selected from each type and each motor is tested to determine how many minutes it operates before it needs to be repaired. The time in minutes is recorded.The Excel output is presented below.
Analysis of Variance
Source
DF
SS
MS
F-Value
Factor
Error
50
Total
1000
Means
Factor
N
Mean
Venetti
5
14,750
Madison
3
13,649
Edison
3
12,170
I.Identify the Factor(s) of this experiment
a. EverRunIncorporated
b. The time in minutes that the motor operates before it fails
c. Manufacturers
d. Treadmill motors
The letter corresponding to your answer is:
II.Identify the number of treatment(s) of this experiment
a. 3
b. 4
c. 2
d. 5
The letter corresponding to your answer is:
III.Identify theresponse variable
a.EverRunIncorporated
b. The time in minutes that the motor operates before it fails
c. Manufacturers
d. Treadmill motors
The letter corresponding to your answer is:
IV.Identify theexperimental units
a.EverRunIncorporated
b. The time in minutes that the motor operates before it fails
c. Manufacturers
d. Treadmill motors
The letter corresponding to your answer is:
V. Why is this experiment a Completely Randomized Design?
VI.The null hypothesis forthe factoris:
a. Not all populations have the same mean.
b. At least one of the population has a different mean.
c.1=2=3=4
d.1=2=3
e. None of these.
The letter corresponding to your answer is:
VII.The value for the F test forthe factoris:
VIII.The value for the critical value of the F test at 5% of significant level is:
IX.What is your conclusion when testing the effect of the factor on the response variable?
a. Reject H0: All populations have a different mean.
b. Reject H0: Exactly two means have the same means.
c. Reject H0: At least one population differs from the others in terms of theirmeans.
d. Fail to reject H0: The meansin the populations are the same.
e. Fail to reject H0: There is insufficient evidence for differences in means amongthe different populations.
The letter corresponding to youranswer is:
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