3. An investigator conducts an experiment involving the effects of three levels of a drug on memory. Subjects are randomly assigned to one of three conditions. A different drug level is administered in each condition. Memory is measured 10 minutes after each subject receives the drug. The following scores are recorded. The higher the score, the better the memory.

Drug Levelonetwothree

6914

5713

8915

21319

In the space below conduct pairwise comparisons using the Tukey, Neuman Keuls, LSD and Bonferroni for the drug study above. Place the work for each test (show all work) below the label for each test and be specific when you state you conclusions.

Tukey test (show all work for Tukey below)

5.259.515.25

5.25-----4.2510.00

9.5------5.75

15.25-----

Tukey critical difference=

Tukey conclusions:

(show all work for Neuman Keuls below)

5.259.515.25

5.25-----4.2510.00

9.5------5.75

15.25-----

Neuman Keuls Critical differenceNK3 =

Neuman Keuls Critical differenceNK2 =

Neuman Keuls conclusions

LSD (show all work for LSD below)

5.259.515.25

5.25-----4.2510.00

9.5------5.75

15.25-----

Critical differenceLSD =

LSD conclusions

Bonferroni (show all work for Bonferroni below)

5.259.515.25

5.25-----4.2510.00

9.5------5.75

15.25-----

Critical differenceBonferroni =

Bonferroni conclusions