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Exam 7: Work Design and Measurement

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Question 51

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The owner of Touchdown Sports Bar wants to develop a time standard for the task of mixing a specialty cocktail. In a preliminary study, he observed one of his bartenders perform this task seven times with an average of 90 seconds and a standard deviation of five seconds. What is the normal time for this task if the bartender worked at a 20 percent faster pace than is average?

A) 75 seconds
B) 90 seconds
C) 108 seconds
D) 110 seconds
E) 112.5 seconds

F) B) and D)
G) A) and B)

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Question 52

Multiple Choice

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Behavioral approaches to job design include:

A) specialization.
B) ergonomics.
C) job rotation.
D) flow process charts.
E) simo charts.

F) All of the above
G) B) and E)

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Question 53

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Methods analysis and motion study techniques do not directly consider behavioral aspects of jobs.

Self-directed teams are allowed to make changes in the work processes under their control.

Output-based systems compensate employees according to the amount of output they produce, thereby tying pay directly to performance.

Eight instances of a worker doing a task were observed as follows: $\begin{array} { l r r r r r r r r } \text { Observation } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 \\\hline \text { Time (seconds) } & 17 & 18 & 15 & 14 & 13 & 15 & 16 & 12\end{array}$ How many observations would be needed to be 99.74 percent confident that the maximum error is 5 percent of the observed time? Assume that the standard deviation of the task time is two seconds.

The methods analysis chart which describes the movements of both hands at the same time is a:

The manager of Lawn and Garden Services would like to estimate the proportion of her employees' time spent performing various gardening and lawn care activities. She has made 400 random observations of a typical worker, with the following results: $\begin{array} { l r } \text { Activity } & \text { Times Observed } \\\hline \text { Mowing } & 200 \\\text { Trimming } & 80 \\\text { Raking } & 40 \\\text { Miscellaneous } & 80\end{array}$ How confident can the manager be that the true proportion of time spent mowing is between .45 and .55?

Work sampling involves the use of some method of randomizing the observations.

Ergonomics is the use of computers and robots in the workplace.

Eight instances of a worker doing a task were observed as follows: $\begin{array} { l r r r r r r r r } \text { Observation } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 \\\hline \text { Time (seconds) } & 17 & 18 & 15 & 14 & 13 & 15 & 16 & 12\end{array}$ If the person observed worked at a pace that is 20 percent faster than average, and if the appropriate allowance for this task is 25 percent of the workday, what should be the standard time?

A job has a normal time of 12 minutes, a performance rating of .80, and an allowance factor of 20 percent of job time. The standard time for this job in minutes is:

A worker-machine chart can be used to determine how many machines an operator can manage.

Which of the following is not generally considered an advantage of specialization?

A job had an observed time of 10 minutes, a performance rating of .90, and an allowance factor of 20 percent of job time. Twenty-five cycles were timed. Standard time for the job in minutes is:

For purposes of obtaining good time standards using a stopwatch time study, the analyst should try to avoid having the worker discover he or she is being observed.

Motivation influences quality and productivity, but not the work environment.

Predetermined time standards involve the use of published data regarding how long various activities are expected to take.

Given the following work sampling data, based upon 100 random observations of a particular worker: $\begin{array} { l c } \text { Activity } & \text { Times Observed } \\\hline \text { A } & 20 \\\text { B } & 50 \\\text { C } & 10 \\\text { Others } & 20\end{array}$ What is the estimated proportion of time this worker spends performing activity B?

A methods and measurements analyst needs to develop a time standard for a certain task. In a preliminary study, he observed one of his workers perform this task five times, with the following results: $\begin{array} { l r r r r r } \text { Observation } & 1 & 2 & 3 & 4 & 5 \\\hline \text { Time (seconds) } & 84 & 76 & 80 & 84 & 76\end{array}$ What is the standard time for this task if the employee worked at a 25 percent faster pace than average and an allowance of 20 percent of the workday is used?