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Unformatted text preview: ssigned to the second training method. After
three months of training, the management trainees took a standardized test. The test was
designed to evaluate their performance and learning from training. The sample mean score
and sample standard deviation of the two methods are given below. The management wants to
determine if the company should implement the new training method. What is the absolute value of the rejection point (critical value of the test statistic) at α = .01?
A. 2.462
B. 2.045
C. 2.453
D. 2.326 105. A fast food company uses two managementtraining methods. Method 1 is a traditional
method of training and Method 2 is a new and innovative method. The company has just hired
31 new management trainees. 15 of the trainees are randomly selected and assigned to the
first method, and the remaining 16 trainees are assigned to the second training method. After
three months of training, the management trainees took a standardized test. The test was
designed to evaluate their performance and learning from training. The sample mean score
and sample standard deviation of the two methods are given below. The management wants to
determine if the company should implement the new training method. What is the sample value of the test statistic? (Assume equal population variances)
A. 1.779
B. 2.311
C. 4.317
D. 0.830 1844 Chapter 01  An Introduction to Business Statistics 106. A fast food company uses two managementtraining methods. Method 1 is a traditional
method of training and Method 2 is a new and innovative method. The company has just hired
31 new management trainees. 15 of the trainees are randomly selected and assigned to the
first method, and the remaining 16 trainees are assigned to the second training method. After
three months of training, the management trainees took a standardized test. The test was
designed to evaluate their performance and learning from training. The sample mean score
and sample standard deviation of the two methods are given below. The management wants to
determine if the company should implement the new training method. Is there evidence at α = .05 to conclude that the new training method is more effective than
the traditional training method?
A. Yes, there is evidence to reject the null hypothesis
B. No, there is not sufficient evidence to reject the null hypothesis 107. A fast food company uses two managementtraining methods. Method 1 is a traditional
method of training and Method 2 is a new and innovative method. The company has just hired
31 new management trainees. 15 of the trainees are randomly selected and assigned to the
first method, and the remaining 16 trainees are assigned to the second training method. After
three months of training, the management trainees took a standardized test. The test was
designed to evaluate their performance and learning from training. The sample mean score
and sample standard deviation of the two methods are given below. The management wants to
determine if the company should implement the new training method. Is there evidence at α = .01 to conclude that the new training method is more effective than
the traditional training method?
A. Yes, there is evidence to reject the null hypothesis
B. No, there is not sufficient evidence to reject the null hypothesis 1845 Chapter 01  An Introduction to Business Statistics 108. In an opinion survey, a random sample of 1000 adults from the U.S.A and 1000 adults
from Germany were asked whether they supported the death penalty. 590 American adults
and 560 German adults indicated that they supported the death penalty. The researcher wants
to know if there is sufficient evidence to conclude that the proportion of adults who support
the death penalty is higher in the U.S.A. than in Germany. What is the rejection point (critical
value of the test statistic) at
= .10?
A. 1.96
B. 2.33
C. 1.28
D. 1.645 109. In an opinion survey, a random sample of 1000 adults from the U.S.A and 1000 adults
from Germany were asked whether they supported the death penalty. 590 American adults
and 560 German adults indicated that they supported the death penalty. The researcher wants
to know if there is sufficient evidence to conclude that the proportion of adults who support
the death penalty is higher in the U.S.A. than in Germany. What is the rejection point (critical
value of the test statistic) at
= .05?
A. 1.96
B. 2.33
C. 1.28
D. 1.645 110. In an opinion survey, a random sample of 1000 adults from the U.S.A and 1000 adults
from Germany were asked whether they supported the death penalty. 590 American adults
and 560 German adults indicated that they supported the death penalty. The researcher wants
to know if there is sufficient evidence to conclude that the proportion of adults who support
the death penalty is higher in the U.S.A. than in Germany. What is the sample value of the test
statistic?
A. 0.607
B. 1.358
C. 2.745
D. 1.919 1846 Chapter 01  An Introduction to Business Statistics 111. In an opinion survey, a random sample...
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