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In: Statistics and Probability

The following data are from an experiment designed to investigate the perception of corporate ethical values...

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 4 10
4 4 11
3 3 10
4 3 9
5 4 10
3 3 10
  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

  2. 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 Select: less than .01, between .01 and .025, between .025 and .05, between .05 and .10, greater than .1

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

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
1 -  2 Select:Significant difference or No significant difference
1 -  3 Select: Significant difference or No significant difference
2 -  3 Select: Significant difference or No significant difference

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