A Time Study of a Certain Service Task Found an Average

question 18

Essay

A time study of a certain service task found an average time of 12.7 minutes and a standard deviation of 1.43, with a standard sample large enough that we are 98% confident that standard time is within 4% of its true value? Was a sample of 25 large enough?

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Definitions:

Movable Type

A system of printing and typography that uses movable components to reproduce the elements of a document, significantly influential in the spread of information.

Industrial Revolution

A period of major industrialization that took place during the 18th and 19th centuries, transforming economies from agrarian to industrial and manufacturing.

Mass Production

describes the manufacturing of large quantities of standardized products, often utilizing assembly lines and mechanization for efficiency.

McLuhan

Marshall McLuhan was a Canadian philosopher and professor known for his work on media theory and his prediction of the World Wide Web nearly thirty years before it was invented.