Operations Management - 1378 Words

Problem 1. Sampling 4 pieces of precision-cut wire (to be used in computer assembly) every hour for the past 24 hours has produced the following results: |Hour |Average (inches)|R (inches) |Hour |Average[pic] |R (inches) | | | | | |(inches) | | |1 |3.25 |0.71 |13 |3.11 |0.85 | |2 |3.10 |1.18 |14 |2.83 |1.31 | |3 |3.22 |1.43 |15 |3.12 |1.06 | |4 |3.39 |1.26 |16†¦show more content†¦UCL/LCL = c+/- z*kwadraat(c) = 6+/- 3*2.45 = 13.3, -1.3 Is the process mean in control, according to the control limits? JA Why/Why not? Omdat alle weken in de interval vallen van 0.13 Assume now that the historical complaint rate has been 4 calls a week. What would the 3-sigma control limits for this process be now? Is the process in control, according to the control limits? Nee In plaats van 36/6 = 6, gebruiken we C = 4 UCL/LCL – 4 +/- 3* Kwadraat (4) = 4 +/- 3*2 = 10, -2 UCL = 10,LCL = 0 Week 4 (11 keer gebeld) Problem 5. Blackburn, Inc., an equipment manufacturer in Nashville, has submitted a sample cutoff valve to improve your manufacturing process. Your process engineering department has conducted experiments and found that the valve has a mean (() of 8.00 and a standard deviation (() of 0.04. Your desired performance is defined by the specification limits (7.865, 8.135). What is the Cpk of the Blackburn valve? [pic] [pic] [pic] [pic] [pic] Dit proces verloopt goed. Het bevind zich binnen de gestelde limieten en de veranderingen zijn gering waarbij het bijna altijd aan de vraag van de klant voldoet. Problem 6. A process filling small bottles with baby formula has a target of 3 ounces plus or minus 0.150 ounces. 200 bottles from the process were sampled. The results showed the average amount of formula placed in the bottles was 3.042 ounces. The standard deviation of the amounts was 0.034Show MoreRelatedOperations Management : Operation Management1355 Words   |  6 PagesOperations Management Introduction Operations management is the activity of managing the resources that create and deliver services and products. The operations function is the part of the organization that is responsible for this activity. Every organization has an operations function because every organization creates some type of services and/or products. However, not all types of organization will necessarily call the operations function by this name. Operations managers are the people who haveRead MoreOperation Management - Cadburyworld2493 Words   |  10 Pagestechnology to streamline the operation process) and facility costs (old and outdated facilities) at lowest possible. In return, they have to compromise low costs with their other objectives. The unskilled staffs and outdated facilities are compromised with the quality in the core process. 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