Time left 0:58:00Bottles for room spray are supposed to weigh exactly 16 oz. Inspectors want to develop process control charts. Theytake six boxes of five bottles each and weigh them. They obtain the following data. The mean weights of each of the 6samples are 15.2, 14.6, 16.5, 18.1, 13.2, and 14.8 respectively. Likewise, the range values for the each of 6 samples are1.8, 0.7,0.5,0.4, 0.2, and 0.9 respectively. Find out Grand Mean (X double bar), and mean range (R bar)O a.15.04, 0.75O b. 15.53,0.67C.16.53,0.86O d. 0,0O e. 15.53, -0.67AGENEXT PAGE78PsDELL

Answered: Bottles for room spray are supposed to…

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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Virginia College promotes a wide variety of executive training courses for firms in the Arlington, Virginia, region. Director Wendy Tate believes that individually typed letters add a personal touch to marketing. To prepare letters for mailing, she conducts a time study of her secretaries. On the basis of the observations shown in the following table, she wishes to develop a time standard for the whole job. Performance Observation (minutes per cycle) Element Rating 1 2 3 4 5 6 Typing letter 80 % 2.6 3.5 2.9 2.0 2.5 3.2 Typing envelope 110 % 0.9 0.7 0.6 0.7 3.2 * 0.8 Stuffing envelope 90 % 0.4 0.5 1.8 * 0.2 0.5 0.6 Sealing, sorting…
5. Elton Mayo is best associated with the Hawthorne studies which were conducted at the Hawthorn plant of Western Electric in Cicero, Illinois?a. TRUE b. FALSE6. By definition, an objective deal with achieving a measurable result with due regard to time.a.True b. False
Six samples of five observations each have been taken for a process. The sample means and ranges computed (in minutes) are, (mean, range): (3.55, 0.76), (4.03, 0.7), (3.72, 0.41), (3.74, 0.48), (4.09, 0.76), and (3.74, 0.62). Compute the upper control limit a. 4.11 b. 4.172 c. 2.451 d. 2.832
As a hospital administrator of a large hospital, you are concerned with the absenteeism among nurses’ aides. The issue has been raised by registered nurses, who feel they often have to perform work normally done by their aides. To get the facts, absenteeism data were gathered for the last 3 weeks (5 working days each week), which is considered a representative period for future conditions. After taking random samples of 64 personnel files each day, the following data were produced: You want to be sure to identify any instances of unusual absences. If some are present, you will have to explore them on behalf of the registered nurses. a. Design a p-chart. b. Based on your p-chart and the data from the last 3 weeks, what can you conclude about the absenteeism of nurses’ aides? 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.
The time needed for performing a machining operation is to be investigated. Historically, the process has had a standard deviation equal to 0.146 minutes. The means (in minutes) of 39 samples of n = 6 are: sample mean sample mean sample mean 1 3.86 14 3.81 27 3.81 2 3.90 15 3.83 28 3.86 3 3.83 16 3.86 29 3.98 4 3.81 17 3.82 30 3.96 5 3.84 18 3.86 31 3.88 6 3.83 19 3.84 32 3.76 7 3.87 20 3.87 33 3.83 8 3.88 21 3.84 34 3.77 9 3.84 22 3.82 35 3.86 10 3.80 23 3.89 36 3.80 11 3.88 24 3.86 37 3.84 12 3.86 25 3.88 38 3.79 13 3.88 26 3.90 39 3.85 the averagee of the 39-sample means is equal to 3.85. construct an xbar-chart for this process with two-sigma limits. Is the process in control?
Problem 10-5 (Algo) Using samples of 196 credit card statements, an auditor found the following:Use Table-A. Sample 1 2 3 4 Number with errors 4 3 6 9 Click here for the Excel Data File a. Determine the fraction defective in each sample. (Round your answers to 4 decimal places.) b. If the true fraction defective for this process is unknown, what is your estimate of it? (Round your answer to 1 decimal place.) c. What is your estimate of the mean and standard deviation of the sampling distribution of fractions defective for samples of this size? (Round your intermediate calculations and final answers to 4 decimal places.) d. What control limits would give an alpha risk of .03 for this process? (Round your intermediate calculations to 4 decimal places. Round your "z" value to 2 decimal places and other answers to 4 decimal places.) e. What alpha risk would control limits of .0470 and .0092 provide? (Round your intermediate calculations to 4 decimal…
Vilfredo Pareto was a famous engineer/economist in the 19th and early 20th centuries. He reportedly expressed this 80/20 Rule: 80% of all progress results from 20% of the actions taken. The Pareto Diagram, also called a Juran Diagram, depicts a variant 80/20 Rule: 80% of all production problems come from 20% of the problem areas. a. What kind of statistical chart is the Pareto Diagram? ____ (enter H for histogram, P for probability distribution, T for a Taguchi chart, A for all three of these. N for none of these. b. The value of the Pareto Diagram is its highlighting the areas causing 80% of quality problems. ____ (enter T for true or F for false)
Bottles for room spray are supposed to weigh exactly 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 15.2, 14.6, 16.5, 18.1, 13.2 , and 14.8 respectively . Likewise , the range values for the each of 6 samples are 1.8, 0.7, 0.5, 0.4, 0.2 , and 0.9 respectively . Find out Grand Mean (X double bar ), and mean range (R bar )
The operations manager of a Soft drink company is concerned about Machine No.3 in the assembly line. In order to make sure that the machine is operating correctly, samples are taken, and the average and range for each sample is computed. Each sample consists of 10 items produced from that machine. Recently, 12 samples were taken and the sample range and average computed for each are as follows: Sample Number Sample Range Sample Mean 1 1.00 45 2 1.21 44 3 0.81 45 4 1.00 46 5 1.11 47 6 0.72 46 7 0.76 49 8 1.01 48 9 1.02 50 10 0.89 51 11 0.76 49 12 1.10 51 During installation, the supplier set an average of 46 for the process with an average range 0.9. (a) Draw the appropriate control charts for machine No. 3. (b) Comment on your results.
15-19 A new president at Big State University has made student satisfaction with the enrollment and registration process one of her highest priorities. Students must see an advisor, sign up for classes, obtain a parking permit, pay tuition and fees, and buy textbooks and other supplies. During one registration period, 10 students every hour are sampled and asked about satisfaction with each of these areas. Twelve different groups of students were sampled, and the number in each group who had at least one complaint is as follows: 0, 2, 1, 0, 0, 1, 3, 0, 1, 2, 2, 0. Develop upper and lower control limits (99.7%) for the proportion of students with complaints.
Your twenty observations of Dr. Knowitall reveal the following information. Assume that the estimate is to be within 5 percent of the true proportion 96 percent of the time Activity Observed Number of Times Observed With patient 6 Reviewing test results 5 On phone 5 Idle 3 Away on emergency 1 Not available 1 Total 21 Calculate the sample size needed to estimate the proportion of time Dr. Knowitall spends away on emergencies.
2. A process screens a certain type of a certain type of potash granule, resulting in a mean diameter of 0.03cm and a standard deviation of 0.003cm. The allowable variation in granule diameter is from 0.02 cm to 0.04 cm. a) Calculate the capability ratio Cp for the process. b) Is the process capable?

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