Which work measurement technique is most appropriate for tasks that are infrequent or have a long cycle time?
Work sampling entails random sampling observations of work activities, designed to give a statistically valid picture of how time is spent by a worker or the utilization of equipment.
Work sampling is an analytical approach for assessing the duration employees spend on certain defined kinds of activities (for instance, setting up equipment, connecting two components, idle...and so on). Work sampling is used to measure the distribution of time employees spend in several defined types of activities.
A technique in which a huge amount of observations are taken on one or even more equipment, operations, as well as employees over a duration of time. Every observation captures what is occurring at that precise moment, as well as the proportion of observations collected for a certain function, as well as postpone, is a metric of the proportion of period that that program's postponement happens.
Work sampling is a method for measuring effort that is suitable for activities that have a large cycling period as well as therefore are infrequency. When working with fixed-processing-time equipment, elemental information is frequently utilized to minimize the requirement for empirical observation. Work sampling is the instrument of choice when activity is infrequently or has long cycle duration.
A toll tunnel has decided to experiment with the use of a debit card for the collection of tolls. Initially, only one lane will be used. Cars are estimated to arrive at this experimental lane at the rate of 750 per hour. It will take exactly four seconds to verify the debit card.
b. How many cars would you expect to see in the system?
A graphics reproduction firm has four automatic equipment units but occasionally becomes inoperative because of the need for supplies, maintenance, or repair. Each Unit requires service roughly twice each hour, or, more precisely, each Unit of equipment runs an average of 30 minutes before needing service. Service times vary widely, ranging from a simple service (such as pressing a restart switch or repositioning paper) to more detailed equipment disassembly. The average service time, however, is minutes. Equipment downtime results in a loss of $20 per hour. The one equipment attendant is Paid $6 per hour.
Using finite queuing analysis, answer the following questions:
B. What is the average number of units still in operation?
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