Where did 35 came from in the computation?

Example: Consider the following composite scores of supervisors and subordinates on a 5- point performance evaluation. Compare the scores for the two groups. Scores: Supervisors: 24, 22, 25, 21, 22 Subordinates: 23, 20, 28, 21, 17, 19, 22, 20 Ranks: Supervisors: 12, 9, 13, 6.5, 9 Subordinates: 11, 4.5, 2, 6.5, 1, 3, 9, 4.5 1. Ho: The scores given by the two groups are equal 2. Hi: Supervisors gave higher scores than their subordinates 3. a = 0.05 4. Test Statistic: Z (standard normal deviate) 0.05 1.645 Z 0.05 Z 1.645 5 Computation: |R, -R,|-0.5 (49.5-35-0.5 14 Z n n, (n +n, +1) 5(8)(5+8 +1) 46.67 = = =2.049 12 12