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Exam 7: Work Design and Measurement

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Question 1

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A methods and measurements analyst for Timepiece, Inc., needs to develop a time standard for the task of attaching a watch to a wristband. In a preliminary study, he observed one of his workers perform this task five times, with the following results: $\begin{array} { l r r r r r } \text { Observation } & 1 & 2 & 3 & 4 & 5 \\\hline \text { Time (seconds) } & 27 & 19 & 20 & 21 & 13\end{array}$ What is the standard time for this task if the employee worked at a 20 percent faster pace than average, and an allowance of 20s percent of job time is used?

A) 4.5 seconds
B) 5 seconds
C) 20 seconds
D) 28.8 seconds
E) 100 seconds

F) A) and C)
G) A) and E)

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Question 2

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A methods and measurements analyst for Timepiece, Inc., needs to develop a time standard for the task of attaching a watch to a wristband. In a preliminary study, he observed one of his workers perform this task five times, with the following results: $\begin{array} { l r r r r r } \text { Observation } & 1 & 2 & 3 & 4 & 5 \\\hline \text { Time (seconds) } & 27 & 19 & 20 & 21 & 13\end{array}$ What is the normal time for this task if the employee worked at a 20 percent faster pace than average?

A) 16.7 seconds
B) 20 seconds
C) 24 seconds
D) 25 seconds
E) 100 seconds

F) B) and E)
G) C) and E)

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Question 3

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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. How many observations should be made if he wants to be 95.44 percent confident that the maximum error in the observed time is one second?

Many lower-level jobs are monotonous and boring.

Methods analysis cannot be done for new jobs (ones that do not yet exist) since it requires observation of the process.

The owner of Kat Motel wants to develop a time standard for the task of cleaning a cat cage. In a preliminary study, she observed one of her workers perform this task six times, with the following results: $\begin{array} { l r r r r r r } \text { Observation } & 1 & 2 & 3 & 4 & 5 & 6 \\\hline \text { Time (seconds) } & 99 & 87 & 90 & 81 & 93 & 90\end{array}$ What is the normal time for this task if the employee worked at a 50 percent faster pace than average?

Given the following work sampling data, based upon 100 random observations of a particular worker: $\begin{array} { l c } \text { Activity } & \text { Times Observed } \\\hline \text { A } & 20 \\\text { B } & 50 \\\text { C } & 10 \\\text { Others } & 20\end{array}$ For a confidence level of 95.44 percent and a maximum error of .04, what should be the sample size for estimating the proportion of time spent performing activity A?

Allowance percentages normally would not include:

Which is not a requirement for an effective self-directed team?

Work sampling provides a detailed elemental breakdown of a task for purposes of establishing reliable time standards.

The technique which can be used to estimate the percentage of time a worker or piece of equipment is idle is known as:

The owner of Kat Motel wants to develop a time standard for the task of cleaning a cat cage. In a preliminary study, she observed one of her workers perform this task six times, with the following results: $\begin{array} { l r r r r r r } \text { Observation } & 1 & 2 & 3 & 4 & 5 & 6 \\\hline \text { Time (seconds) } & 99 & 87 & 90 & 81 & 93 & 90\end{array}$ How many observations should be made if she wants to be 95.44 percent confident that the maximum error in the observed time is two seconds? Assume that the standard deviation of the task time is six seconds.

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 80 percent of normal, what should be the normal time for this task?

Which sample proportion will require the largest number of work sampling observations?

An initial time study resulted in an average observed time of 2.2 minutes per cycle, and a standard deviation of .3 minutes per cycle. The performance rating was 1.20. What sample size, including the 20 observations in the initial study, would be necessary to have a confidence of 95.44 percent that the observed time was within 4 percent of the true value?

Measured day work refers to an output-based system.

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 on activities B and C?

A methods and measurement analyst wants to develop a time standard for a certain task. In a preliminary study, he observed one worker perform the task six times with an average observed time of 20 seconds and a standard deviation of two seconds. What is the standard time for this task if the employee worked at a 20 percent faster pace than average, and an allowance of 25 percent of the workday is used?

Methods analysis is particularly valuable when it is used on jobs that: (I) are high in labor content. (II) are done frequently. (III) involve a high degree of automation and mechanization. (IV) are unsafe, tiring, unpleasant, and/or noisy.

Process chart symbols do not include: