Worked problems (Show calculations in order to get full credit) 1. The CEO has asked you to evaluate the firm's productivity by comparing performance a month from last year and equivalent month this year. The following data are available: (10 points) Last Year This Year Output 11,500 units 13,100 units Labor (hours) 10,000 10.200 Utilities (BTU) 5.600 6.250 Capital $81,000 $86,000 The CEO determines his costs to be as follows: Labor $20 per hour Utilities $0.60 per BTU Capital 10% per month of investment. Show the productivity change for one month last year versus one month this year, on a multifactor basis. 2. A small software development project has 9 major activities. The times are estimated and provided in the network below. [15 points] 4 G A 4 c 8 5 67 WIH o B H 5 NIM (a) Using the method of ES, EF, LS, and LF, determine the project completion time? (b) Find the critical path(s). State the non-critical activities. (d) Explain what it means if an activity has a slack of zero (give an example). (e) Explain what it means if an activity has a slack of non-zero (give an example)