A University Planner Is Interested in Determining the Percentage of Spring

question 136

Short Answer

A university planner is interested in determining the percentage of spring semester students who will attend summer school. She takes a pilot sample of 160 spring semester students discovering that 56 will return to summer school.
a.Construct a 95% confidence interval estimate for the percentage of spring semester students who will return to summer school.
b.Using the results of the pilot study with a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 3% or less?

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Definitions:

Mandible

The lower jaw or jawbone, significant in the structure of the face and in the process of chewing.

Trapezius Muscle

A large superficial muscle that extends from the occipital bone to the lower thoracic vertebrae and to the scapular spine, involved in moving the shoulder blade and supporting arm movements.

Intercostal Space

An anatomical term referring to the space located between two ribs, through which nerves and blood vessels run.

Midclavicular Line

An imaginary vertical line passing through the midpoint of the clavicle in each half of the human body.