Statistics 1213
Final Examination
1998 December 8
OPEN BOOK; NOTES AND BOOKS ALLOWED
N O   C A L C U L A T O R S
Time:        Three hours
Attempt:     All Questions
Examiner:    William Knight 
PART I [8] Suppose there are N treated animals (or plants) and N controls, and that every treated animal (or plant) scores higher than any control. Calculate the Mann-Whitney sign count for --
                        What is U for N=4             _____
                        What is U for N=5             _____
                        What is U for N=6             _____
At five percent, is this evidence that the treatment is better than the control?
                        For N=4                       _____
                        For N=5                       _____
                        For N=6                       _____

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