A Work-Sampling Method Is Used to Determine the Proportion of the Time

question 85

Multiple Choice

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.
$$\begin{array} { | c | c | c | } \hline \text { Day } & \begin{array} { c } \text { No. Times } \\\text { Clerk Idle }\end{array} & \begin{array} { c } \text { Total No. } \\\text { Observations }\end{array} \\\hline \text { Monday } & 4 & 13 \\\text { Tuesday } & 2 & 8 \\\text { Wednesday } & 4 & 10 \\\text { Thursday } & 2 & 10 \\\hline\end{array}$$
If the manager wants a 95 percent confidence level and a degree of precision of ± 0.03,how many more observations are needed?

• A) Fewer than or equal to 600
• B) Greater than 600 but fewer than or equal to 800
• C) Greater than 800 but fewer than or equal to 1,000
• D) Greater than 1,000

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Definitions:

Illusion of Control

The erroneous belief that one can influence or control outcomes that are actually determined by chance.

Discounting Principle

A psychological concept suggesting that when there are multiple perceived causes for behaviour, the importance of any single cause is diminished.

False Consensus Effect

The cognitive bias where a person overestimates the extent to which their beliefs, values, or behaviors are normal and shared by others.

Theory of Mind

The ability to attribute mental states—beliefs, intents, desires, emotions—to oneself and others and to understand that others have beliefs and perspectives different from one's own.