A Lawyer Researched the Average Number of Years Served by 45

question 19

Multiple Choice

A lawyer researched the average number of years served by 45 different judges on the Supreme Court. The average number of years served was 13.8 years with a standard deviation of 7.3 years. What is the
95% confidence interval for the average number of years served by all Supreme Court judges?

• A) \(11.7 < \mu < 15.9\)
• B) \(11.8 < \mu < 15.8\)
• C) \(12.9 < \mu < 16.9\)
• D) \(12.5 < \mu < 17.3\)

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Definitions:

Autopsy

A post-mortem examination to discover the cause of death or the extent of disease.

Research Design

A structured plan that outlines how a study will be conducted to investigate a particular problem or hypothesis.

Quasi-Experiment

An empirical study that appears to involve some, but incomplete, experimental control (e.g., through nonrandom assignment of participants to conditions).

Clinical Interview

A research paradigm in which an investigator begins by asking participants a series of open-ended questions but follows up on the responses with specific questions that have been prepared in advance.