In Order to Estimate the Average Electric Usage Per Month

question 77

Multiple Choice

In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determined.Assume a population standard deviation of 450 kilowatt-hours.At 95% confidence, the size of the margin of error is

• A) 1.96.
• B) 50.00.
• C) 98.00.
• D) 42.00.

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Definitions:

Random Sample

A subset of a population chosen in such a way that every member has an equal chance of being included, ensuring the sample’s representativeness.

Chronic Diseases

Chronic diseases are long-term medical conditions that are generally progressive and require ongoing management, such as diabetes, heart disease, and arthritis.

Infectious Diseases

Diseases caused by pathogens such as bacteria, viruses, fungi, or parasites, that can be transmitted from one individual to another.

Sociological Perspective

An approach to understanding human behavior by placing it within its broader social context.