Oxnard Petro, Limited, has three Interdisciplinary project development teams that function on an ongoing basis. Team members rotate from time to time. Every 4 months (three times a year) each department head rates the performance of each project team (using a O to 100 scale, where 100 is the best rating). Are the main effects significant? Is there an Interaction? Year Engineering Harketing 83 Finance 2007 74 90 85 85 88 84 76 94 2009 86 72 91 83 70 94 85 84 71 98 77 2011 83 90 90 76 77 Click here for the Excel Data File (a-1) Choose the correct row-effect hypotheses. a. Ho: A # A2 # A3 # 0 = year means differ H: All the A, are equal to zero year means are the same b. Ho: A = A2 = A3 =0 e year means are the same H: Not all the Aj are equal to zero eyear means differ Oa Ob

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Oxnard Petro, Limited, has three Interdisciplinary project development teams that function on an ongolng basis. Team members rotate
from time to time. Every 4 months (three times a year) each department head rates the performance of each project team (using a O to
100 scale, where 100 is the best rating). Are the maln effects significant? Is there an Interaction?
Year
Harketing Engineering
83
Finance
2007
74
90
85
85
88
84
76
94
2009
86
72
91
83
70
94
85
84
80
2011
83
71
98
80
77
76
77
O Click here for the Excel Data File
(a-1) Choose the correct row-effect hypotheses.
a. Ho: A* A2 A3 +0 year means differ
H: All the A, are equal to zero e year means are the same
b. Ho: A = A2 = A3 =0e year means are the same
H: Not all the A, are equal to zero e year means differ
O a
Ob
(a-2) Choose the correct column-effect hypotheses.
a. Ho: B + B2 pi B3 +0e department means differ
H: All the Bare equal to zero e department type means are the same
b. Ho: B = B2 = B3 =0 e department means are the same
H: Not all the B, are equal to zero e department type means differ
Oa
Ob
Transcribed Image Text:Oxnard Petro, Limited, has three Interdisciplinary project development teams that function on an ongolng basis. Team members rotate from time to time. Every 4 months (three times a year) each department head rates the performance of each project team (using a O to 100 scale, where 100 is the best rating). Are the maln effects significant? Is there an Interaction? Year Harketing Engineering 83 Finance 2007 74 90 85 85 88 84 76 94 2009 86 72 91 83 70 94 85 84 80 2011 83 71 98 80 77 76 77 O Click here for the Excel Data File (a-1) Choose the correct row-effect hypotheses. a. Ho: A* A2 A3 +0 year means differ H: All the A, are equal to zero e year means are the same b. Ho: A = A2 = A3 =0e year means are the same H: Not all the A, are equal to zero e year means differ O a Ob (a-2) Choose the correct column-effect hypotheses. a. Ho: B + B2 pi B3 +0e department means differ H: All the Bare equal to zero e department type means are the same b. Ho: B = B2 = B3 =0 e department means are the same H: Not all the B, are equal to zero e department type means differ Oa Ob
Table of Means
Factor 2 (Department)
Factor 1 (Year)
Marketing
Engineering
Finance
Average
2007
2009
2011
Total
Source
df
MS
F
P-value
Factor 1 (Year)
Factor 2 (Department)
Interaction
Error
Total
(c) Using a = 0.05, choose the correct statement.
O The main effects of department and year are significant, but there Is not a significant Interaction effect.
O The maln effect of department is significant; however, there
department and year.
no significant effect from year or Interaction between
O The main effect of year Is significant; however, there is no significant effect from department or Interaction between
department and year.
(d) Interpret the p-values carefully.
The p-values range from highly significant (Department) to insignificant (Year). The interaction effect, if any, is
weak
since about
88
samples in 100 would show an Fstatistic this large in the
presence
of interaction.
Transcribed Image Text:Table of Means Factor 2 (Department) Factor 1 (Year) Marketing Engineering Finance Average 2007 2009 2011 Total Source df MS F P-value Factor 1 (Year) Factor 2 (Department) Interaction Error Total (c) Using a = 0.05, choose the correct statement. O The main effects of department and year are significant, but there Is not a significant Interaction effect. O The maln effect of department is significant; however, there department and year. no significant effect from year or Interaction between O The main effect of year Is significant; however, there is no significant effect from department or Interaction between department and year. (d) Interpret the p-values carefully. The p-values range from highly significant (Department) to insignificant (Year). The interaction effect, if any, is weak since about 88 samples in 100 would show an Fstatistic this large in the presence of interaction.
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