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:

Electroencephalograph

is a device used to record the electrical activity of the brain, typically for medical diagnosis or research purposes.

Electrical Stimulation

A therapeutic technique involving the application of electrical current to stimulate or modulate muscle activity and nerve functions.

MRI Scanning

A medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body, utilizing strong magnetic fields and radio waves.

CT Scanning

An imaging procedure that combines a series of X-ray images taken from different angles around the body and uses computer processing to create cross-sectional images of the bones, blood vessels, and soft tissues.