A Researcher Wished to Evaluate the Operating Life of a Certain

question 26

Short Answer

A researcher wished to evaluate the operating life of a certain brand of storage battery. A group of 30, brand-new batteries was selected and placed in 30 identical automobiles. The lights in each automobile were then turned on (without running the engines), and the length of time before the batteries were fully discharged (lights went out) was recorded. The scores, in hours, were: 15, 10, 20, 18, 18, 11, 11, 11, 11, 12, 12, 12, 10, 9, 9, 8, 9, 9, 11, 11, 11, 15, 12, 12, 12, 10, 12, 12, 15, 12.
-For the following set of scores, calculate the standard deviation: 8,9,10,12,10,10,16,11,24.

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Definitions:

Cognitive Categorization

A process in which the mind quickly sorts information into categories to function efficiently.

Psychoanalytic Tool

Techniques derived from psychoanalysis used to explore and understand the unconscious mind, motivations, and psychological conflicts.

Male Chauvinism

A belief or behavior of male superiority, often manifesting in discrimination or bias against women.

Self-fulfilling Prophecies

A belief or expectation that influences behaviors in a way that causes the belief to become true.