Question 1 [10 marks]

The following data are from an experiment designed to investigate the perception of corporate ethical values among individuals specializing in marketing (higher scores indicate higher ethical values).

Marketing Managers 6 5 4 5 6 4

Marketing Research 5 5 4 4 5 4

Advertising 6 7 6 5 6 6

a.[6] Use Minitab and = 0.05 to test for significant differences in perception among the three groups. In the calculations section, insert only that portion of your output that is pertinent. Complete the components of the test.

[1] Hypothesis:

[1] Decision rule:

[2] Calculations (insert only the portion of your Minitab output pertinent to this part):

[2] Conclusions:

b.[1] If you determined a significant difference in part a, use Minitab to conduct a Fisher's LSD procedure to determine where the differences occur. Insert the pertinent output.

c.[3 - 1 for output; 2 for conclusions] Develop a boxplot (using Minitab). Use a single plot and put all three boxplots together. Use the plot and your results in part b to assess which group is the most ethical and which is the least.

Plot (shrink down by using the handle on the bottom right):

Conclusions: