Exam 19: Work Measurement, Learning Curves, and Standards

An employee was observed over an extended period of time for a work sampling study, with the following results: Performance On the Phone 30\% 1.15 Filing 35\% 0.70 Face-to-Face with Customer 25\% 1.10 Idlle 10\% \ldots While doing her job in a 40-hour work week, the employee helped 120 face-to-face, walk-in customers. Determine the standard time in minutes that it took her to help each face-to-face walk-in.

Determine the sample size for the following time study given a standard deviation of four minutes and a 98% probability that the value of the sample mean is within 1.5 minutes?

For work sampling, p will never be known exactly since it is the population parameter that is being estimated.

For a work sampling study, there is a 95% probability that the processing time of an activity has an error of less than 0.06 minutes. The best estimate we have for "p" is 0.30. Determine the size sample that should be used for this work sampling study.

The Chester Table Company mass produces quality end tables for motels. They produce 5,000 end tables per week. The owner is trying to determine how many workers he needs. The workers work 40 hours per week but are idle about three percent of the time due to cleaning up their area. Their performance rating is equal to one. The owner has developed these time standards for operations per table: Transporting the table through the plant = 2 minutes Table top = 10 minutes One leg = 4 minutes Finishing = 5 minutes a. How long does it take in minutes) to produce one table? b. What is the labor standard in minutes) for this operation? c. What is the minimum number of workers needed to produce 5000 tables in one week?

For a work sampling study, there is a 95% probability that the processing time of an activity has an error of less than 0.06 minutes. The best estimate we have for "p" is 0.30. Determine the sample size needed for a work sampling study if no estimate of p is available.

The learning curve does not apply to supervisory personnel, some skilled craftspeople or jobs that have non-repetitive job tasks.

A method of randomly observing work over a period of time to obtain a distribution of the activities that an individual or a group of employees performs is called

Define work measurement and what it leads to from an operations perspective.

Consider the following time study data. $\quad$$\quad$$\quad$$\quad$$\text { Observation Cycles Actual Time in Minutes) }$ Work Task 1 2 3 4 5 6 7 A 0.12 0.17 0.19 0.11 0.15 0.16 0.20 B 0.91 0.95 0.97 0.88 0.86 0.80 0.94 C 1.52 1.48 1.40 1.60 1.65 1.52 1.47 a. If the performance rating factor for A = 1.15, B = 1.0 and C = 0.85, determine the normal time for the job. b. If personal allowance is 7%, fatigue allowance is 12%, personal delay allowance is 9% and avoidable delay is 4 minutes, determine the standard time for the job.

The ____ states that the cost of doing any repetitive task, work activity or project decreases as the accumulated experience of doing the job increases.

Determine the sample size for the following time study given a standard deviation of three ounces and a 92% probability that the value of the sample mean is within two ounces?

The manager at a sewing factory uses a piece?rate pay system. She has just received an order for 600 dresses from the discount house downtown. She is trying to figure out what her costs are for the project. She has conducted a time study and found operations take this long: 2 minutes to sew one sleeve 3 minutes to sew body of the dress 3.5 minutes to hem all unfinished edges 1 minute to attach the collar 3 minutes to attach all buttons The workers must sit idle while they wait for supplies on the conveyor belt for an average of 30 seconds. Their performance rating is equal to one. She pays the workers $6.00 per hour. a. What is the allowance factor for the operation? b. What is the labor standard in minutes) per dress? c. What is the labor cost per dress? d. What is the labor cost for the entire order of 600 dresses?

Job and process analysis should follow work measurement.

Regression analysis is used to predict times based on different attributes of work.

Predetermined time standards are