Mark's Ceramics Spent $4000 on a New Kiln Last Year

question 52

Essay

Mark's Ceramics spent $4000 on a new kiln last year in the belief that it would cut annual energy usage 25% over the old kiln.This kiln is an oven that turns "greenware" into finished pottery.Mark is concerned that the new kiln requires extra labor hours for its operation.Mark wants to check the energy savings of the new oven,and also to look over other measures of their productivity to see if the change really was beneficial.Mark has the following data to work with:
Were the modifications beneficial?

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Definitions:

James Hutton

James Hutton is known as the father of modern geology for his work in the late 18th century that introduced the concept of deep time and the principle that the earth is shaped by ongoing processes.

Charles Lyell

A 19th-century geologist known for his contributions to the principles of geology and the concept that the Earth was shaped by slow-moving forces still in operation today.

Descent with Modification

A core principle of evolutionary biology indicating that species change over time, giving rise to new species, while sharing a common ancestor.

Darwin's Idea

Refers to the theory of evolution by natural selection, proposed by Charles Darwin, which describes how species evolve over time through changes in heritable traits.