At a Tennis Tournament a Statistician Keeps Track of Every

question 40

Multiple Choice

At a tennis tournament a statistician keeps track of every serve. The statistician reported that the mean servespeed of a particular player was 104 miles per hour (mph) and the standard deviation of the serve speeds was 8mph. Assume that the statistician also gave us the information that the distribution of the serve speeds was bellshaped. What proportion of the playerʹs serves are expected to be between 112 mph and 120 mph?

• A) 0.1350
• B) 0.270
• C) 0.95
• D) 0.68

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Definitions:

Economic Profit

The difference between total revenue and total economic costs (including both explicit and implicit costs), reflecting a firm's financial performance.

Perfectly Competitive

A market structure characterized by many buyers and sellers, no barriers to entry, and a homogeneous product.

Long Run

A period in economics where all factors of production and costs are variable, allowing for full industry adjustment.

Economic Profits

The disparity between a company's overall income and the sum of its explicit and implicit expenses.