Nsfs 347 Work ((free)) Jun 2026

Duration: 3 hours Total points: 200 Instructions: Answer all required sections. Write clearly. Where asked, show reasoning, cite any assumptions you make, and use examples or diagrams when helpful. Use concise, well-organized answers; quality of explanation and application of concepts is graded as heavily as correctness. You may use a calculator and one double-sided formula sheet.

You cannot see, smell, or taste most flammable gases. In "347 work," you must use a calibrated multi-gas detector. nsfs 347 work

Problem 2 — Incentive design and unintended consequences (20 pts) A company introduces a KPI: “tickets closed per day” to motivate customer support agents. After rollout, closures increase but customer satisfaction drops. Using course frameworks, do the following: a) Map the causal chain from KPI change to decreased satisfaction (diagram + brief labels). (8 pts) b) Propose a revised KPI system with three metrics that balance speed, quality, and learning; justify each. (8 pts) c) Describe an A/B test to validate the new system over 8 weeks (sample sizes, primary outcome, and stopping criteria). (4 pts) Duration: 3 hours Total points: 200 Instructions: Answer

Problem 1 — Workflow latency analysis (20 pts) A distributed team performs a five-step editorial workflow (steps A→B→C→D→E). Expected processing times (minutes per item) when handled by humans are: A=12, B=8, C=20, D=10, E=5. The probability an item requires a rework loop back from D to B is 0.15; that rework requires B and C again. Items arrive in bursts — average arrival rate 6 items/hour during peak 2-hour windows. The team has one specialist per step. a) Compute the expected processing time per item including rework. (10 pts) b) Identify the bottleneck and compute its utilization at peak. (6 pts) c) Recommend two redesign choices (e.g., staffing, automation, batching) to reduce average cycle time, and estimate the expected reduction in minutes for each choice (assume linear scaling). (4 pts) In "347 work," you must use a calibrated multi-gas detector