What Proportion of the Data from a Normal Distribution Is

question 81

Multiple Choice

What proportion of the data from a normal distribution is within 2 standard deviations of the mean?

• A) 0.3413 .
• B) 0.4772 .
• C) 0.6826 .
• D) 0.9544 .

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Definitions:

Economies of Scale

Cost advantages that enterprises obtain due to scale of operation, with cost per unit of output decreasing with increasing scale.

Marginal Output

Refers to the additional output that results from using one more unit of a production input, such as labor or capital, in the production process.

Total Output

The total quantity of goods and services produced in an economy during a given period.

Fixed Cost

Expenses that do not change in total regardless of the level of output or activity, such as rent, salaries, and insurance.