The Speeds of the Fastballs Thrown by Major League Baseball

question 93

Multiple Choice

The speeds of the fastballs thrown by major league baseball pitchers were measured by radar gun. The mean speed was 87 miles per hour. The standard deviation of the speeds was 3 mph. Which of the following speeds would be classified as an outlier?

• A) 97 mph
• B) 81 mph
• C) 92 mph
• D) 84 mph

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Definitions:

Variable Costs

Expenses that vary directly with the level of production or sales, such as materials and labor.

Break-even Sales

The amount of revenue required to cover total fixed and variable costs, resulting in zero profit or loss.

Fixed Costs

Expenses that do not change in proportion to the activity of a business, such as rent, salaries, and insurance premiums, remaining constant regardless of variations in business activity.

Variable Costs

Expenses that change in proportion to the activity of a business, such as materials or labor directly tied to production volume.