Question

The following data are from an experiment designed to investigate the perception of corporate ethical values among individuals who are in marketing. Three groups are considered: management, research and advertising (higher scores indicate higher ethical values).

Marketing Managers	Marketing Research	Advertising
5	6	5
4	6	6
3	5	5
4	5	4
5	6	5
3	5	5

1. Compute the values identified below (to 1 decimal, if necessary).
   

   Sum of Squares, Treatment
   Sum of Squares, Error
   Mean Squares, Treatment
   Mean Squares, Error

b. Use  = .05 to test for a significant difference in perception among the three groups.

Calculate the value of the test statistic (to 2 decimals).

The p-value is Selectless than .01between .01 and .025between .025 and .05between .05 and .10greater than .10Item 6

What is your conclusion?
Conclude the mean perception scores for the three groups are not all the same (OR)

Cannot conclude there are differences among the mean perception scores for the three groups

c. Using  = .05, determine where differences between the mean perception scores occur.

Calculate Fisher's LSD value (to 2 decimals).

Test whether there is a significant difference between the means for marketing managers (1), marketing research specialists (2), and advertising specialists (3).

Difference

Absolute Value

Conclusion

x₁ - x₂ ____________ Sig diff or not?

x₁ - x₃ ____________ Sig diff or not?

x₂ - x₃ _____________ Sig diff or not?

Answer 1