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
6	7	10
5	7	11
4	6	10
5	6	9
6	7	10
4	6	10

a. Compute the values identified below (to 2 decimal, if necessary).

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

b. Use a=.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 your answer -less than .01between .01 and .025between .025 and .05between .05 and .10greater than .10Item 6

What is your conclusion?

- Select your answer -Cannot conclude there are differences among the mean perception scores for the three groupsConclude the mean perception scores for the three groups are not all the sameItem 7

c. Using a=.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		- Select your answer -No significant differenceSignificant differenceItem 10
x1-x3		- Select your answer -No significant differenceSignificant differenceItem 12
x2-x3		- Select your answer -No significant differenceSignificant differenceItem 14

Answer 1

Answer:

a)

sum of square (treatment)=79.00

sum of square (error)=7.50

mean square (treatments)=39.50

mean square; error =0.50

b)

test statistic =39.5/0.5

                   = 79.00

p value = 0.0000

p value is less than 0.01

As we Observe that the p value is less than 0.05 (alpha)

So, we reject Null hypothesis

So, we conclude that mean percentage score are not at all same.

c)