A Methods and Measurements Analyst for Digital Devices Needs to Develop

question 73

Multiple Choice

A methods and measurements analyst for Digital Devices needs to develop a time standard for the task of assembling a computer mouse. In a preliminary study, she observed one of her workers perform this task six times with the following results: $$\begin{array} { l r r r r r r } \text { Observation } & 1 & 2 & 3 & 4 & 5 & 6 \\\hline \text { Time (seconds) } & 46 & 38 & 40 & 34 & 42 & 40\end{array}$$ How many observations should be made if she wants to be 86.64 percent confident that the maximum error in the observed time is .5 second? Assume that the standard deviation of the task time is four seconds.

• A) 10
• B) 12
• C) 120
• D) 144
• E) 169

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Definitions:

Federal Labour Regulations

Laws and guidelines established by the government to regulate working conditions, wages, hours, and workplace safety.

Reduce Biases

Reducing biases involves implementing strategies to minimize preconceived notions and unfair preferences that affect judgment and decision-making.

Work-Related Injuries

Physical or psychological harm that occurs as a result of work activities or in a workplace environment.

Behaviour Modelling

A training method that involves demonstrating desirable behaviors in a way that they can be imitated by learners.