A Team of Researchers Has Conducted a Study of the Well-Being

question 99

Multiple Choice

A team of researchers has conducted a study of the well-being of the citizens of the island nation of Zarasa. Using a scale from 1 (least happy) to 10 (most happy) , the researchers find that citizens who earn 100 Zarutas per year have a mean happiness of 2.0, those who earn 200 Zarutas per year have a mean happiness of 6.0, and those who earn 300 Zarutas per year have a mean happiness of 7.0. The researchers should make which of the following conclusions?

• A) The utility of Zarasians increases with income.
• B) The marginal utility of Zarasians increases with income.
• C) The marginal utility of Zarasians decreases with income.
• D) both A and B
• E) both A and C

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Definitions:

Population Variance

A measure of dispersion that represents the average of the squared differences from the Population Mean, showing how spread out the population data points are.

Science Scores

Science scores refer to the quantitative measurements or results obtained from assessments or tests designed to evaluate knowledge and understanding in the field of science.

Confidence Interval

An interval estimate of a population parameter used to indicate the reliability of an estimate.

Population Variance

A measure of the spread of a population’s attributes or numbers; it signifies how much the data differ from the mean of the population.