A Recent Survey Was Conducted to Compare the Cost of Solar

question 165

Multiple Choice

A recent survey was conducted to compare the cost of solar energy to the cost of gas or electric energy. Results of the survey revealed that the distribution of the amount of the monthly utility bill of a 3-bedroom house using gas or electric energy had a mean of $104 and a standard deviation of $10. If nothing is known about the shape of the distribution, what percentage of homes will have a monthly utility bill of less than $84?

• A) at most 25%
• B) at least 75%
• C) at most 11.1%
• D) at least 88.9%

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Definitions:

Intimacy Versus Isolation

A stage in Erik Erikson's theory of psychosocial development where individuals face the challenge of forming intimate relationships with others versus becoming isolated as a result of not forming these connections.

Erik Erikson

A psychologist known for his theory on psychosocial development, emphasizing eight stages that cover the human lifespan.

Generativity

A stage of psychosocial development where adults strive to create or nurture things that will outlast them, often by parenting or contributing to society.

Empirical Method

The process of acquiring knowledge through observation and experimentation rather than through theoretical speculation.