A Time-Study Analyst Has Found the Select Time for a Work

question 28

Multiple Choice

A time-study analyst has found the select time for a work element to be 14.0 minutes,with a sample standard deviation of 3.2 minutes.What is the minimum sample size needed if the estimate is to be within 4 percent of the average 95 percent of the time?

• A) Fewer than 100
• B) Greater than or equal to 100 but fewer than 140
• C) Greater than or equal to 140 but fewer than 180
• D) Greater than or equal to 180

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Definitions:

Transportation Method

A mathematical technique used in logistics and operations research to determine the most cost-effective way of distributing goods from several suppliers to several consumers.

Aggregate Planning

Aggregate planning is a marketing activity aimed at determining the optimal levels of production, inventory, and workforce to meet varying demand over a medium-term horizon.

Medium Range

Refers to a period or distance that is neither short nor long, often contextually defined, such as in planning or forecasting.

Mathematical Model

A representation in mathematical terms of a real-world situation, using equations to simulate and study complex phenomena.