In a Normal Distribution, What Proportion of Scores Fall Within

question 45

Multiple Choice

In a normal distribution, what proportion of scores fall within the interval between the first standard deviation below the mean to the second standard deviation below the mean?

• A).6826
• B).3413
• C).8413
• D).1359

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Definitions:

Contribution Margin

The amount remaining from sales revenue after variable costs have been deducted, used to cover fixed costs and generate profit.

Margin of Safety

The difference between actual sales and the break-even point, indicating how much sales can fall before a business incurs a loss.

Dollars

The currency unit of the United States, often used to represent money or economic transactions.

Break-Even Point

The point at which total cost and total revenue are equal, resulting in no net loss or gain for the business.