1998 December 8
N O C A L C U L A T O R S
Time: Three hours Attempt: All Questions Examiner: William KnightPART I  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 _____