Problem 10-7 (Algo)The postmaster of a small western town receives a certain number of complaints each day about mall delivery.DAYNumber of complaintsUCLLCLb. Is the process in control?O No14Yes2 311 154 58sa96675Click here for the Excel Data Filea. Determine two-sigma control limits using the above data. (Round your Intermediate calculations to 4 decimal placesand final answers to 3 decimal places. Leave no cells blank - be certain to enter "0" wherever required. Round up any negativecontrol limit value to zero.)81291510 11 12 13 146 4 2 117

C-chart is model of control chart which considering the countable type of non conformities and…

Answered: The postmaster of a small western town…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

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Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Quality Engineering question What is Statistical Process Control? With what purpose is it used for? Please explain breifly with an example. Please answer in your own words.
The following data were collected on the number of nonconformities per unit for 10 time periods. Complete parts (a) and (b). Time 1 2 3 4 5 6 7 8 9 10 Nonconformities Per Unit 23 11 14 15 6 14 11 9 13 6 What is the upper control limit? Select the correct choice below and fill in any answer boxes within your choice. A. UCL=enter your response here (Round to three decimal places as needed.) B. There is no upper control limit.
Daily samples of I 00 power drills are removed fromthe assembly line at Drills by Stergios Fotopoulos and inspectedfor defects. Over the past 21 days, the following information hasbeen gathered. Develop a 3 standard deviation (99.73% confidence)p-chart and graph the samples. Is the process in control?
Burger Doodle is a fast-food restaurant that processes anaverage of 680 food orders each day. The average cost of each order is $6.15. Four percent of the orders are incor-rect, and only 10% of the defective orders can be corrected with additional food items at an average cost of $1.75. Theremaining defective orders have to be thrown out.a. Compute the average product cost.b. In order to reduce the number of wrong orders,Burger Doodle is going to invest in a computerizedordering and cash register system. The cost of thesystem will increase the average order cost by $0.05and will reduce defective orders to 1%. What is theannual net cost effect of this quality-improvementinitiative?c. What other indirect effects on quality might be realizedby the new computerized order system?
86) PLEASE HELP ME WITH THIS Design specifications require that a key dimension on a product measure 106 = 11 units. A process being considered for producing this product has a standard deviation of four units. a. What can you say (quantitatively) regarding the process capability? Assume that the process is centered with respect to specifications.Note: Round your answer to 4 decimal places. b. Suppose the process average shifts to 97. Calculate the new process capability. Note: Round your answer to 4 decimal places.. c. What Is the probability of defective output after the process shift? Note: Use Excel's NORM.S.DIST function to find the correct probability. Round "z" values to 2 decimal places. Round y answer to 4 decimal places.
An airline company wishes to reduce the customer waiting time at the gates at a major airport using Taguchi Design of Experiments. The management decides to use Taguchi design of experiments for this project. Control Factors Level 1 Level 2 Assigned seating Yes (Y) No (N) Number of check-in bags allowed 1 2 Food and beverage supply on flight Beverage only (B) Food and Beverage (FB) Since there are 3 control factors with 2 levels in each, a total of 8 “runs” are possible. However, since performing the experiment with all possible runs is time-consuming, the management decides to consider only 4 runs. The noise factors are four different gates assigned to the airline. The experiment data is shown in the following table: Assigned Bags Food/Bev Gate 1 Gate 2 Gate 3 Gate 4 Y 1 B 31 27 29 32 Y 2 FB 46 40 38 35 N 1 FB 31 29 28 37 N 2 B 45 43 42 41 Make recommendations to the…
The postmaster of a small western town receives a certain number of complaints each day about mail delivery. DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Number of complaints 4 10 16 8 9 6 5 14 13 7 6 4 2 10 a. Determine three-sigma control limits using the above data. (Round your intermediate calculations to 4 decimal places and final answers to 3 decimal places. Leave no cells blank - be certain to enter "0" wherever required. Round up any negative control limit value to zero.) UCL ______ LCL ____
Garcia's Garage desires to create some colorful charts and graphs to illustrate how reliably its mechanics "get under the hood and fix the problem." The historic average for the proportion of customers that return for the same repair within the 30-day warranty period is 0.08. Each month, Garcia tracks 100 customers to see whether they return for warranty repairs. The results are plotted as a proportion to report progress toward the goal. If the control limits are to be set at two standard deviations on either side of the goal, determine the control limits for this chart. In March, 15 of the 100 customers in the sample group returned for warranty repairs. Is the repair process in control? The UCLp equals____________The LCLp equals_____________ (Enteryour responses rounded to three decimal places.)
What trade-offs are involved in each of these decisions?a. Deciding whether to use two-sigma or three-sigma control limits.
A customer has specified that they require a process capability of Cp= 1.5 for a certain product. Assume that USL = 1100, LSL = 700, and the process is centered within the specification range. a. What standard deviation should the process have? b. What is the process mean value? c. What can the company do if it is not capable of meeting these requirements?
Garcia's Garage desires to create some colorful charts and graphs to illustrate how reliably its mechanics "get under the hood and fix the problem." The historic average for the proportion of customers that return for the same repair within the 30-day warranty period is 0.09. each month, Garcia track 80 customers to see whether they return for warranty repairs. The results are plotted as a proportion to report progress toward the goal. If the control limits are to be set at two standard deviations on either side of the goal, determine the control limits for this chart. In March, 14 of the 80 customers in the sample group returned for warranty repairs. Is the repair process in control? The UCL Subscript p equals and the LCL Subscript p equals (Enter your responses rounded to three decimal places.)
Garcia’s Garage desires to create some colorful charts and graphs to illustrate how reliably its mechanics “get under the hood and fix the problem.” The historic average for the proportion of customers that return for the same repair within the 30-day warranty period is 0.10. Each month,Garcia tracks 100 customers to see whether they return for warranty repairs. The results are plotted as a proportion to report progress toward the goal. If the control limits are to be set at two standard deviations on either side of the goal, determine the control limits for this chart. In March, 8 of the 100 customers in the sample group returned for warranty repairs. Is the repair process in control?

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