An initial time study was done on a process with the following results (in minutes). Basedon the data obtained so far, assuming an allowance of 20 percent of the normal time, whatdo you estimate for the time per customer served, based on this preliminary sample?ElementElement 1Element 2Element 3Performance Rating7011090Obs 1486Obs 23108Obs 3597Obs 44117Obs 53106

Element Obs 1 Obs 2 Obs 3 Obs 4 Obs 5 Average Performance rating Normal time 1 4 3 5 4 3…

Answered: An initial time study was done on a…

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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Supervisor Kenneth Peterson wants to detem1ine thepercentage of time a machine in his a rea is idle. He decides to usework sampling, and his initial estimate is that the machine is idle 20%of the time. How many observations should Peterson take to be 98%confident that the results will be Jess than 5% from the true results?
The cycle time for performing a certain task has been clocked at 13 minutes. The performance rating of Richard Muszynski III was estimated at 120%. Common practice in this department is to allow 6 minutes of personal time and 4 minutes of fatigue time per hour. In addition, there should be an extra allowance of 3 minutes per hour for inspection. b) The allowance fraction is ?
5. The manager of Asombrado Bounty Office, Charles Badillo, estimates his employees are idle 25%of the time. With that problem, how many work samples are needed to consider within 3%accuracy and have 95.45% confidence level. 6. At ASP Micro Manufacturing, Inc. workers press semiconductor into predrilled slots on printed-circuit boards. Determine the normal time of the operation in seconds. The elemental motions for normal time used by the company are as follows:• Reach 6 inches for semiconductors 10.5 TMU• Grasp the semiconductors 8.0 TMU• Move semiconductor to printed-circuit board 9.5 TMU• Position semiconductor 20.1 TMU• Press semiconductor into slots 20.3 TMU• Move board aside 15.8 TMU 7. The semiconductor used in Costin Calculator has 5 components with the consistency of 90%, 95%,98%, 90%, and 99%, respectively. How reliable is one product of calculator?
Describe the critical decisions that must be made to ensure the effectiveness of procedures.
5. Who process the screening in the supermarket? 6.Who process the interview in the supermarket? 7.Who process the evaluation in the supermarket?
8.25. Describe the differences between a process flowchart and a worker-machine chart and what they are designed to achieve. 8.26. Pick an activity you are familiar with in your daily life such as washing a car, cutting grass, or taking a shower, and develop a process flowchart for it.
For a time study of a health insurance claims-adjusting process, the analyst uses the continuous method of recording times. The job is divided into four work elements. Shown in Figure are the performance rating factors, RF, and the continuous method recorded times, r, for each work element.a. Calculate the normal time for this job. b. Calculate the standard time for this job, assuming that the allowance is 20 percent of the normal time. c. What is the appropriate sample size for estimating the time for element 2 within {10 percent of the true mean with 95 percent confidence?
Latisha Simmons, a loan processor at Wentworth Bank, has been timed performing four work elements, with the results shown in the following table. Task Element 1 2 3 4 Performance Rating 110% 85% 90% 85% 1 0.6 0.6 0.5 1.4 Observation (minutes per cycle) 2 3 4 0.3 0.8 0.5 1.9 0.6 0.7 0.6 1.9 0.4 0.6 0.5 1.7 The allowances for tasks such as this are personal, 8%; fatigue, 12%; and delay, 3%. minutes (round your response to two a) The normal time for the complete operation : = decimal places). b) The standard time for this process = minutes (round your response to two decimal places). 0.5 0.8 0.5 1.4
4. Mancio Manufacturing Co. has asked you, as their IE, to check a labor standard prepared by a recently resigned analyst. Determine the sample size you need considering your accuracy is to be within 5%, standard deviation of the sample is 1.0 and the mean is 3.0. 5. The manager of Asombrado Bounty Office, Charles Badillo, estimates his employees are idle 25% of the time. With that problem, how many work samples are needed to consider within 3% accuracy and have 95.45% confidence level. 6. At ASP Micro Manufacturing, Inc. workers press semiconductor into predrilled slots on printed- circuit boards. Determine the normal time of the operation in seconds. The elemental motions for normal time used by the company are as follows: Reach 6 inches for semiconductors 10.5 TMU • Grasp the semiconductors • Move semiconductor to printed-circuit board 9.5 TMU • Position semiconductor 8.0 TMU 20.1 TMU Press semiconductor into slots 20.3 TMU Move board aside 15.8 TMU 7. The semiconductor used in…
company from your understanding. 3) Calculate the standard time for an operation from the following data. Average observed time for manual elements = 4 0 minutes Average auto cycle time = 3 minutes Rating on a scale of 100 = 90% Personal & other allowances = 15% of basic time

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