UMUC plans to use a new method to teach the students about business ethics. As a
ID: 3221284 • Letter: U
Question
UMUC plans to use a new method to teach the students about business ethics. As an experiment, the administrator randomly selected 15 students, and randomly assigned them to one of three groups: a powerpoint presentation created by the faculty, AuthorGen Presentation created by the faculty, or a well known method by the ABC Company. After completing their assigned method, the students are given a Business Ethics Test. Use the Data Analysis at a=0.01 to decide which method to use.
A) pvalue=0.458, accept Ho: Mean test results are unequal, AuthorGen method is best choice because it has the highest mean score.
B) AuthorGen method is best because it has the highest mean score
C) F=0.835<Fcrit 6.927, accept Ho: Mean test results are equal, choose the least expensive method.
D) F=0.834<Fcrit 6.927, accept Ho: Mean test results are equal. Choose the method with the highest mean score
E) F=0.834 <Fcrit 6.927, accept Ho: Mean test results are unequal. Choose the method with the highest mean score.
F) pvalue=0.458> a 0.05, accept Ho: Mean test results are equal, choose the lease expensive method
PowerPoint method AuthorGen method ABC method 68 79 75 85 86 83 91 82 78 87 92 86 88 91 81Explanation / Answer
Null hypothesis All means are equal
Alternative hypothesis At least one mean is different
Significance level = 0.01
By using excel, one way ANOVA is shown below:
The correct interpretation should be:
C) F=0.835<Fcrit 6.927, accept Ho: Mean test results are equal, choose the least expensive method.
Anova: Single Factor SUMMARY Groups Count Sum Average Variance PowerPoint method 5 419 83.8 82.7 AuthorGen method 5 430 86 31.5 ABC method 5 403 80.6 18.3 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 73.73333333 2 36.86666667 0.834716981 0.457703558 6.92660814 Within Groups 530 12 44.16666667 Total 603.7333333 14Related Questions
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