A Manufacturer of Tennis Rackets Has Designed a New Racket

question 28

Essay

A manufacturer of tennis rackets has designed a new racket and would like to compare it to their previous design.They design an experiment as follows.They will obtain 100 volunteer tennis players.Volunteers will be randomly assigned to one of two groups.Group 1 will use the company's previous racket first and the new racket second.Group 2 will use the company's new racket first and the previous racket second.Each player will serve 100 times with each racket.The percentage of good serves with the two rackets will then be compared.The experiment is double blind.If the group of volunteers consists of 60 professional tennis players and 40 beginners,explain why blocking by tennis level would be important.

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Definitions:

Economic Crises

Periods characterized by severe disruptions in the financial and economic stability of a country or globally, often marked by high unemployment and insolvency among key industries.

Neutrality Acts

A series of laws passed in the 1930s by the United States Congress aimed at keeping the nation out of future conflicts, by limiting its involvement in foreign wars and prohibiting arms sales to belligerents.

Belligerents

Parties engaged in conflict or warfare, whether nations, groups, or individuals, characterized by active hostility.

Arms Sales

The business or act of buying and selling military weapons and equipment, either between countries or to non-state actors.