Cheat Cheat Exam 3

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School

Sam Houston State University *

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Course

4390

Subject

Industrial Engineering

Date

Apr 3, 2024

Type

docx

Pages

1

Uploaded by maddie124

Which of the following is specifically characterized by the elimination of waste through a focus on exactly what the customer wants? Lean operations. Manufacturing cycle time is best defined as the: time from raw materials receipt to finished product exit. Lead time for computers is 5 days with daily demand of 25 and safety stock of 5 computers. If management wants to use 10 kanbans how many computers should each one hold? 13. x control charts for variables are based on data that come from : average and small samples. The Central Limit Theorem: allows managers to use the normal distribution as the basis for building some control charts. The number of late insurance claim payouts per 100 should be measured with what type of control chart? p-chart. An x-bar control chart was examined, and no data points fell outside of the limits. Can this process be considered in control? Not yet, there could be a pattern to the points and not yet, the number of samples must be known. The phases of project management are: planning, scheduling, and controlling. WBS stands for which of the following project management tools? Work breakdown structure. Which of the following statements concerning CPM activities is false? The late finish of an activity is the earliest late start of all preceding activities. The critical path for the network activities shown below is ___ with duration ___. A-D-E; 19. Which of the following is the prescribed remedy when the bullwhip effect is caused by the price fluctuations? Price stabilization. What is the value of the bullwhip measure for a company with a standard deviation of demand equal to 18, and a standard deviation of orders equal to 20? 1.235. Which of the following is NOT one of the major causes of the bullwhip effect? shared demand information. The objective of a statistical process control (SPC) system is to: provide a statistical signal when assignable causes of variation are present. What is the reasoning behind setting the upper and lower control limits ±3σx from the mean? We know that 99.73% of natural variation is contained within ±3σx, and thus any data point outside of the limits is likely due to assignable variation. The latest finish of an activity is: Min{LS of all immediate following activities}. The slack for any activity on the critical path will be: zero. LINE BALANCING is the process of assigning tasks to workstations in such a way that the workstations have approximately equal time requirements. Individual departments making the best decision for their own area leads to SUB-OPTIMIZATION for the organization. SENSITIVITY ANALYSIS of a solution is done by evaluating how the solution changes when one or more model parameter is changed. A DECISION TREE is a schematic representation of alternatives. Gantt chart for scheduling: are visual devices that show the duration of activities in a project and the predecessor/successor relationships between activities. If an activity whose normal duration is 8 days can be shortened to 5 days for an added cost of $3,000, what is the crash cost per period? 1,000. Crash cost per period = (crash cost – normal cost) / (normal time – crash time) Control chart - Two critical path activities are candidates for crashing on a CPM network. Activity details are in the table below. To cut one day from the project's duration, activity ________ should be crashed first, adding ________ to project cost. 5 steps to control chart – 1. Collect 20 – 25 samples and compute mean and range. 2. Compute overall means, set control limits, and find upper and lower limit. 3. Graph the means and ranges and see if fall outside acceptable limits. 4. Investigate signs or patterns that show process is out of control. 5. Collect additional samples and do again if necessary. JIT focuses on continuous forced problem solving. TPS emphasizes continuous improvement, respect for people, and standard work practices in an assembly-line environment. Lean operations emphasize understanding the customer 7 wastes – Overproduction, Queues, Transportation, Inventory, Motion, Overprocessing, and Defective products. 5S’s - Sort/segregate (Seiri) – when in doubt, throw it out. Simplify/straighten (Seiton) – methods analysis tools. Shine/sweep (Seisou) – clean daily. Standardize (Seiketsu) – remove variations from processes. Sustain/self-discipline (Shitsuke) – review work and recognize progress. Kanban - Japanese word for card. The card is an authorization for the next container of material to be produced . A sequence of kanbans pulls material through the process. The “Bullwhip Effect” describes the phenomenon where the variability of demand information increases as the orders progress up the supply chain.
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