Use the Empirical Rule to Describe Data That Are Bell $0.1585$

question 149

Multiple Choice

Use the Empirical Rule to Describe Data That Are Bell Shaped
-At a tennis tournament a statistician keeps track of every serve. The statistician reported that the mean serve speed of a particular player was 103 miles per hour (mph) and the standard deviation of the serve speeds was 9 mph. Assume that the statistician also gave us the information that the distribution of the serve speeds was bell shaped. What proportion of the player s serves are expected to be between 112 mph and 130 mph

• A) \(0.1585\)
• B) \(0.317\)
• C) \(0.997\)
• D) \(0.68\)

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Definitions:

Sunk Costs

Costs that have already been incurred and cannot be recovered or refunded, and thus should not factor into future decision-making processes.

Fixed Costs

Fixed expenditures that are unaffected by changes in production or sales volumes, like rent, wages, and insurance costs.

Marginal Cost

The cost incurred by producing one additional unit of a good or service.

Crafters Fair

An event where artisans and craftspeople showcase and sell their handmade goods, often featuring a variety of unique items.