A Researcher Wished to Evaluate the Operating Life of a Certain

question 83

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.
-Calculate the mean.

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Definitions:

Revised Article 9

An update to the Uniform Commercial Code that deals with secured transactions; it governs the process of securing assets to back a loan.

UCC

The Uniform Commercial Code is a widespread legislative schema that guides all commercial operations in the United States.

Security Agreement

is a legal document that provides a lender a security interest in a specified asset or property that serves as collateral for a loan.

Online

Connected to or available through the internet or other digital network.