A Researcher Wished to Evaluate the Operating Life of a Certain

question 73

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 mean, range and standard deviation: 12, 2, 5, 9, 11, 10, 10, 4.

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Definitions:

Terminal Buttons

Small structures at the end of a neuron's axon that release neurotransmitters to communicate with other neurons.

Neuron's Cell

The basic working unit of the brain, a specialized cell designed to transmit information to other nerve cells, muscle, or gland cells.

Computational Device

An electronic machine or system, such as a computer, that performs automated calculations or processing of information.

Multi-input

Multi-input describes systems or devices capable of receiving and processing more than one type of input or signal simultaneously.