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Exam 7: Work Design and Measurement

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Question 81

Multiple Choice

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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 observed time for this task?

A) 80 seconds
B) 84 seconds
C) 160 seconds
D) 240 seconds
E) 400 seconds

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

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Question 82

True/False

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Time-based systems compensate employees according to the time they have worked and the amount of output they produce.

A) True
B) False

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Question 83

Multiple Choice

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Which of the following statements should not characterize an operations strategy toward the design of work systems?

Therbligs are basic elemental motions.

The methods analysis chart which describes the overall sequence of operations, transportation, storage, delays, and inspection is a:

Ergonomics is an important part of job design to consider when we automate the system.

One disadvantage of specialization is worker dissatisfaction.

Job enrichment involves giving a workers a greater share of the total task, which is why they feel enriched.

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 B?

In a stopwatch time study, adjusting the normal time by an allowance factor for normal delays and interruptions results in the:

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 standard time for this task if the bartender worked at a 20 percent faster pace than is average, and an allowance of 10 percent of job time is used?