A company manufactures printers and fax machines at plants located in Atlanta, Dallas, and Seattle. To measure how much employees at these plants know about qualitymanagement, a random sample of 6 employees was selected from each plant and the employees selected were given a quality awareness examination. The examinationscores for these 18 employees are shown in the following table. The sample means, sample variances, and sample standard deviations for each group are also provided.Managers want to use these data to test the hypothesis that the mean examination score is the same for all three plants.Plant 1Plant 2Plant 3AtlantaDallasSeattle857059767665837462757369726875838366Sample797466meanSample28.427.631.2varianceSamplestandard 5.335.255.59deviationSet up the ANOVA table for these data. (Round your values for MSE and F to two decimal places, and your p-value to four decimal places.)SourceSumDegreesMeanSquareFp-valueof Variationof Squares of FreedomTreatmentsErrorTotalTest for any significant difference in the mean examination score for the three plants. Use a = 0.05.State the null and alternative hypotheses.ⒸH: Not all the population means are equal.H₂H₂ = H₂=H3ⒸH: At least two of the population means are equal.H₂: At least two of the population means are different.ⒸH₁ H₂ = H₂ = H₂H₂H₁ H₂ H3ⒸH₂H₂=H₂H3H₂: Not all the population means are equal.Find the value of the test statistic. (Round your answer to two decimal places.)Find the p-value. (Round your answer to four decimal places.)p-value=

Here, we have three groups of data, these groups are "plant 1 atlanta", "plant 2 dallas" and "plant…

Answered: Set up the ANOVA table for these data.…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

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

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The Road King Tire Company in Birmingham wants to monitor the quality of the tires it manufactures. Each day the company quality-control manager takes a sample of 100 tires, tests them, and determines the number of defective tires. The results of 20 samples have been recorded as follows: Sample Number of Defectives Sample Number of Defectives 1 14 11 18 2 12 12 10 3 9 13 19 4 10 14 20 5 11 15 17 6 7 16 18 7 8 17 18 8 14 18 22 9 16 19 24 10 17 20 23 Construct a P -chart for this process using 2q limits and describe the variation in the process. Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
A garment manufacturer wants to set up a control chart for irregularities. Each week a random sample of 25 garments is collected from production and the number of irregularities is recorded. The table below gives the results for the past 20 weeks: 1 6 8 10 Sample Number Irregularities 11 2 3 4 5 7 9 8 12 4 16 5 8 17 10 11 16 20 Sample Number | Irregularities 11 12 13 14 15 17 18 19 7 12 13 8 17 11 9 10 (a) Using the data set up an appropriate control chart using a three sigma control limits. (b) Comment on the process. [8 marks] [2 marks] 9,
The IRS is concerned with improving the accuracy of tax information given by its representatives over the telephone. Previous studies involved asking a set of 25 questions of a large number of IRS telephone representatives to determine the proportion of correct responses. Historically, the averageproportion of correct responses has been 72 percent. Recently, IRS representatives have been receiving more training. On April 26, the set of 25 tax questions were again asked of 20 randomly selected IRS telephone representatives. The numbers of correct answers were 18, 16, 19, 21, 20, 16,21, 16, 17, 10, 25, 18, 25, 16, 20, 15, 23, 19, 21, and 19. a. What are the upper and lower control limits for the appropriate p-chart for the IRS? Use z = 3. b. Is the tax information process in statistical control?
Auto pistons at Wemming Chung's plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be controlled. From sample sizes of 5 pistons produced each day, the mean and the range of this diameter have been as follows: Day Mean (mm) Range R (mm) 158 4.3 151.2 4.4 155.7 4.2 153.5 4.8 156.6 4.5 What is the UCL using 3-sigma?(round your response to two decimal places). 1. 2. 4.
Using appropriate examples, distinguish between ‘attributes’ and ‘variables’ with regards to the measures of quality in Statistical Process Control.
Bottles for room spray are supposed to weigh exactly 16 oz. Inspectors want to develop process control charts. They take six boxes of five bottles each and weigh them. They obtain the following data. The mean weights of each of the 6 samples are 15.43, 14.47, 18.07, 17.34 12.74and 15.58 respectively. Likewise , the range values for the each of 6 samples are 1.63.0.66 6, 0.47, 0.40, 0.20 , and 0.90 respectivelyFind out Grand Mean double bar), and mean range (R bar) aligned 16.53,0.71\\ 15.82,.0.65 aligned a. b. Oc 16.538, 0.86 e. 0.0
Problem 1: Auto pistons at Wemming Chung’s plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be controlled. From sample sizes of 10 pistons produced each day, the mean and the range of this diameter have been as follows: Day Mean (mm) Range (mm) 1 156.9 4.2 2 153.2 4.6 3 153.6 4.1 4 155.5 5.0 5 156.6 4.5 a) What are the UCL x (line on top of x, counldn't find the button to do it) and LCL x (line on top of x) , using 3σ? Plot the data. b) What are the UCL R and LCL R , using 3σ? Plot the data. c) Is the Process in Control? (Please screen shot the EXCEl if its in excel) Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
Inter-State Moving and Storage Company wishes to establish a control chart to monitor the proportion of residential moves that result in written complaints due to late delivery, lost items, or damaged items. A sample of 40 moves is selected for each of the last 12 months. The number of written complaints in each sample is 9, 7, 4, 9, 1, 9, 11, 5, 5, 8, 7, and 15. Number Defective Percent defective 9 18 7 14 4 8 9 18 1 2 9 18 11 22 5 10 5 10 8 16 7 14 15 30 a. Insert the mean proportion defective, UCL, and LCL. (Leave no cells blank - be certain to enter "0" wherever required. Round your intermediate calculations and final answers to 2 decimal places.) Mean proportion defective UCL LCL c. Does it appear that the number of complaints is out of control for any of the months?multiple choice Yes No
A quality control manager in an Omani bottling company takes 5 samples for quality control purposes. These sample mean (X-bar) are; 8.51,8.18, 11.07, 10.03, and 10.23 respectively. Additionally, the range values for these 5 samples are; 3.33, 2.61, 3.39,4.39, and 6.49. If the lower control limit for X-bar chart is 6.65, what should be the most appropriate sample size? O a. 3 O b. 5 O c. Od. None is correct O e. 4
Five samples of size 4 were taken from a process. A range chart was developed that had LCLR = 0 and UCLR = 2.50. Similarly, an average chart was developed with the average range from the five samples, with LCL = 15.0 and UCL = 24.0. The ranges for each of the five samples were 1.75, 2.42, 2.75, 2.04, and 2.80, respectively. The values of the sample average for each sample were 19.5, 22.3, 17.4, 20.1, and 18.9, respectively. What can you tell management from this analysis? The process variability is out of control, and we cannot make a statement about the process average. The process variability is out of control, but the process average is in control. The process variability and the process average are out of control. We cannot tell if the process variability or the process average is out of control. Need the answer in 10 minutes, if possible. Please
Boston Electric Generators has been getting manycomplaints from its major customer, Home Station, about thequality of its shipments of home generators. Daniel Shimshak,the plant manager, is alarmed that a customer is providing himwith the only information the company has on shipment quality.He decides to collect information on defective shipments througha form he has asked his drivers to complete on arrival at customers'stores. The forms for the first 279 shipments have been turnedin. They show the following over the past 8 weeks: Even though Daniel increased his capacity by adding more workersto his normal contingent of 30, he knew that for many weekshe exceeded his regular output of 30 shipments per week. Areview of his turnover over the past 8 weeks shows the following: a) Develop a scatter diagram using total number of shipmentsand…
3.1.The Great North Woods Clothing Company sells specialty outdoor clothing through its catalog. A quality problem that generates customer complaints occurs when a warehouse employee fills an order with the wrong items. The company has decided to implement a process control plan by inspecting the ordered items after they have been obtained from the warehouse and before they have been packaged. The company has taken 30 samples (during a 30-day period), each for 100 orders, and recorded the number of defective orders in each sample, as follows Sample Number of Defectives Sample Number of Defectives 1 12 16 6 2 14 17 3 3 10 18 7 4…

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