According to a National Survey, the Average Commuting Time for People

question 108

Multiple Choice

According to a national survey, the average commuting time for people who commute to work is 19.0 minutes. Suppose a researcher wants to test this claim. Taking a random sample of 20 commuters, the researcher calculates a mean time of 19.346 minutes and a standard deviation of 2.842 minutes.
-The appropriate test statistic to test the hypotheses is _____.

• A)1.08
• B)0.54
• C)-1.08
• D)-0.54
• E)3.60

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Definitions:

Metabolism

The sum of all the chemical processes that occur within a cell or organism; the transformations by which energy and matter are made available for use by the organism. See anabolism and catabolism.

Chemical Reactions

Processes that involve rearrangement of the molecules or ionic structure of substances, resulting in the formation of new products.

Growth

An increase in the size, number, value, or strength of something, often a natural biological process in living organisms involving an increase in cell size or number.

Chemical Unit

A specific quantity of a substance used in chemistry for measurement, such as a mole.