Exam 23: Measuring Output Rates

Table H.2 -A time study analysis was performed on a task with two work elements.The select times for these work elements are 21.0 seconds and 13.0 seconds,with rating factors of 1.1 and 1.2,respectively.Each work element is performed twice per cycle.If an allowance of 20 percent is used,what is the standard time for this task?

Table H.1 A worker was observed for four cycles in a repetitive task that contains four distinct elements.The observer recorded the following items in seconds,using the snap-back method: -The observer assigned a performance rating factor of 1.10 to the worker and the company employs an allowance factor of 15%.What is the normal time for Element 2?

The gentleman farmer recorded the time it took to feed and water his chickens and collect eggs each morning.He has done this several times,so he assigns himself a rating of 1.15.The allowance factor for this endeavor is 5%.What is the normal time for this job element?

The gentleman farmer recorded the time it took to feed and water his chickens and collect eggs each morning.He has done this several times,so he assigns himself a rating of 1.15.The allowance factor for this endeavor is 5%.What is the standard time for this job element?

What are the limitations of time studies?

At a new watch assembly plant,a job is divided into three work elements.The element times for the first four cycles are recorded by the continuous method and are presented below along with a performance rating factor (RF)for each element. The standard time for this job,assuming that the allowance is 18 percent,is:

A time study analyst has found the select time for a work element to be 14.0 minutes,with a sample standard deviation of 3.2 minutes.What is the minimum sample size needed if the estimate is to be within 4 percent of the average 95 percent of the time (z = 1.96)?

A work sampling method is used to determine the proportion of the time a worker is idle.The following information was gathered on a random basis. If the manager wants a 95 percent confidence level (z = 1.96)and a degree of precision of + 0.03,how many more observations are needed?

Which one of the following statements about work measurement methods is TRUE?

The sample size needed for a time study will increase as ________ and/or ________ increase.

The performance rating factor in a time study is a totally objective measure.

When using the MTM approach:

An industrial engineer is conducting a time study for a work element.The select time is 4.5 minutes,and the sample standard deviation of the observed time is 20 seconds.What is the appropriate sample size if the estimate is to be 5 percent of the true average time 95 percent of the time?

Table H.3 A worker was observed for four cycles in a repetitive task.The observer recorded the following times,in seconds,using the continuous method.The ratings for each element and frequency it is performed are also indicated in the table.The allowance fraction is 20 percent. -Use the information in Table H.3.What is the standard time for the complete cycle?

A work standard is the time required for a trained worker to perform a task following a prescribed method with normal effort and skill.

The Dean's office is interested in determining the percentage of students receiving A's in their study tour classes.The results of three classes are summarized in this table: The Assistant Dean wants a 98 percent confidence level and a degree of precision of + 0.04.How many more observations are needed?

Table H.1 A worker was observed for four cycles in a repetitive task that contains four distinct elements.The observer recorded the following items in seconds,using the snap-back method: -The observer assigned a performance rating factor of 1.15 to the worker and the company employs an allowance factor of 20%.What is the standard time for Element 3?

What is the impact of greater reliance on technology on work measurement?

Table H.1 A worker was observed for four cycles in a repetitive task that contains four distinct elements.The observer recorded the following items in seconds,using the snap-back method: -The observer assigned a performance rating factor of 1.15 to the worker and the company employs an allowance factor of 20%.What is the select time for Element 2?

A supermarket administrator suspects that idle time is about 20 percent for the cashier and 15 percent for the office clerk.If the administrator wants a 95 percent confidence level (z = 1.96)and a degree of precision of + 0.05 for both cashier and office clerk,how many TOTAL observations are needed?