An Article Describes a Study of the Effectiveness of a Fabric

question 20

Multiple Choice

An article describes a study of the effectiveness of a fabric device that acts like a support stocking for a weak or damaged heart. In the study, 94 people who consented to treatment were assigned at random to either a standard treatment (S) consisting of drugs or the experimental treatment (E) that consisted of drugs plus surgery to install the stocking. After two years, 36% of the 61 patients receiving the stocking had improved,while 23% of the patients receiving the standard treatment had improved. Which of the following hypotheses should be tested to determine whether the proportion of patients who improve is significantly higher for the experimental treatment than for the standard treatment? ​

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Definitions:

English

A West Germanic language originating from England, now the primary language of international discourse and an official language in several countries worldwide.

Oliver Cromwell

A military and political leader who played a leading role in the English Civil War and ruled as Lord Protector of the Commonwealth of England, Scotland, and Ireland in the mid-17th century.

Commercialism

The emphasis on maximizing profit through advertising and market exploitation, often at the expense of quality or ethics.

Expanding Territory

The process by which a country or state increases its land area through colonization, military conquest, or other means.