The Amount of Time Workers Spend Commuting to Their Jobs

question 20

Multiple Choice

The amount of time workers spend commuting to their jobs each day in a large metropolitan city has a mean of 70 minutes and a standard deviation of 20 minutes. Assuming the distribution of commuting times is known to be moundshaped and symmetric, what percentage of these commuting times are between 50 and 110 minutes?

• A) approximately 95%
• B) approximately 68%
• C) approximately 97.5%
• D) approximately 81.5%

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Definitions:

Manufacturing Overhead

All manufacturing costs aside from the costs of direct materials and direct labor, encompassing expenses such as maintenance, utilities, and rent of the production facility.

Predetermined Overhead Rates

An estimated rate used to allocate manufacturing overhead costs to products or job orders, based on a selected activity base.

Machine-Hours

The total number of hours that machinery is operating for production purposes.

Machining

A manufacturing process involving the shaping of metal or other materials using machines such as lathes, milling machines, and grinders.