Productivity ( units produced per hour) of II workers are shown below Worker After training Before training 12.7 12.4 12.3 11. 7 11.3 N M J lo 13.1 12.6 12.4 11.8 12.7 11.8 13-1 M 12.5 12.5 13.7 13.1 13.2 12.7 13.1 12.3 a) The sum of positive signed ranks ( 7+) is ? 9. 81 / 2. 24 / 27. 5 /49. 5/8.9 6) The mean Hot is ? 9. 81 / 27. 5 / 2. 19/ 8. 9/49. 5 C ) The value of of+ is? 9.81 / 2. 19) 27. 5/8. 9 / 49.5 d) The value of calculated Z is ? 2.49/ 2.19/ 27.5 / 8.9 / 49.5 e) at a= 0.05, what can be concluded about effectiveness of the training? f ) at a = 0. 1 1 1