Question The product development group at Poseidon Corporation has been working on a new computer software product that has the potential to capture a large market share. Through outside sources, Poseidon's management has learned that a competitor is working to bring a similar product to the market. As a result, Poseidon's top management has increased its pressure on the product development group. The group's leader has tumed to PERT/CPM as aid to scheduling the activities remaining before the new product can be brought to market. The PERT/CPM network is as follows: D G B E H F The activity time estimates in weeks are given below. Activity Optimistic А 3.0 B 3.0 с 4.0 D 2.0 E 6.0 F 7.5 G 4.5 Most Probable 4.0 3.5 5.0 3.0 10.0 8.5 6.0 6.0 2.5 Pessimistic 5.0 7.0 6.0 4.0 14.0 12.5 7.5 13.0 6.0 6.0 Н I 5.0 2.0 J 4.0 5.0 a. Do a forward/backwards pass. Identify the slack for each activity and critical path. b. What is the probability that the project will be completed so that Poseidon Corporation may introduce the new product within 25 weeks? Within 30 weeks?

(b) A Manager has the problem of assigning four new machines to three production facilities. The respective profits derived are as shown. If only one machine is assigned to a production facility, determine the optimal assignment. Profits (K'000) production facility Machine A B C A 10 10 14 B 10 11 13 с 12 10 10 D 13 12 11 (4 Marks)

C. Which of the following organisms are most closely related? Are any two the same species? On what did you base your answer? 2.0 A B D C Rod Rod Coccus Rod + + Fermentative Oxidative Fermentative Fermentative Characteristics Morphology Gram Reaction Glucose utilization Cytochrome oxidase GC moles % Present Present Absent Absent 48-52 23-40 50-54 49-53

For this week's discussion, you are asked to generate a continuous and differentiable function f (2) with the following properties: • f(x) is decreasing at x = -6 • f(x) has a local minimum at x = -3 • f (x) has a local maximum at x = 3 Hints: • Use calculus! • Before specifying a function f (2), first determine requirements for its derivative f' (2). For example, one of the requirements is that f' (-3) = 0. • If you want to find a function g(x) such that g(-9) = 0 and g(8) = 0, then you could try g(x) = (x + 9) (x – 8). • If you have a possible function for f' (2), then use the techniques in Indefinite Integrals this Module to try a possible f (x). You can generate a plot of your function by clicking the plotting option (the page option with a "P" next to your function input). You may want to do this before clicking "How Did I Do?". Notice that the label "f(2) =" is already provided for you. Once you are ready to check your function, click "How Did I Do?" below (unlimited attempts). Please note that the bounds on the x-axis go from -6 to 6. f(x) = How Did I Do? Try Another

. Explain which types of market inefficiencies derive from monopolies. Use examples from the textbook to support your claims. • Describe the types of inefficiencies that derive from monopolistic competition. Use examples from the textbook to support your claims. How are monopolies and monopolistic competitive firms profitable? Use examples from the textbook . Explain which types of market inefficiencies derive from monopolies. Use examples from the textbook to support your claims. • Describe the types of inefficiencies that derive from monopolistic competition. Use examples from the textbook to support your claims. How are monopolies and monopolistic competitive firms profitable? Use examples from the textbook to support your analysis.

CLEARLY PLEASE Toluene is produced by hydroforming conversion of n-heptane in a Cr203@-A1203 catalyst medium. The operating conditions of the process are given on the flow chart. The solvent used in the process is recovered. CH3CH2CH2CH2CH2CH2CH2 - CH3CH3 + 4H2 Toluene production efficiency is 15% based on n-heptane fed into the process. The solvent ratio used in the extractor is 10 kg solvent / 1 kg toluene. According to this, a. Calculate how much heat must be added or removed to keep the reactor isothermal at 425 °C. b. What is the temperature of the n-heptane or solvent stream leaving the extractor. (The temperatures of the n- heptane and solvent streams can be considered the same.) но | 425 °C Cooler n-Heptane Superheater 425 °C 18°C 18 °C Catalytic Reactor HO Saturated Toluene vapour n-Heptane . 38c Solvent Heat Heat Extractor Still Exchanger Separator 18 °C 120 °C Solvent Solvent+Toluene

Chapter 4: Project Management (CPM & PERT TECHNIQUES) QUESTION 1 A network consists of the following list. Times are given in weeks. Preceding Activity A B C D E F G H I J K Duration 9 2 12 5 6 A A A B B CF ဝ ထt D H GI E, ] 3 2 8 6 2 a. Draw the network diagram. b. Which activities form the critical path? c. What is the duration of the project completion? QUESTION 2 A PERT problem is detailed in the table below. Times are given in weeks. Preceding Activity A B с D E F G H I J K A A A B B CF D H GI E,J Optimistic Time 7 2 8 3 4 6 2 2 6 4 2 Probable Time/ Most likely time 9 2 12 5 6 8 3 2 8 6 2 Pessimistic Time 14 8 16 10 8 10 4 8 16 14 5 a. Calculate the expected time and ES, EF, LF, and LS of each activity. b. Draw diagram network for this project. c. What are the project variance and the project standard deviation? d. What is the estimated completion time? e. What is the probability of completion of the project after week 40?