Assume That a Sample Is Used to Estimate a Population

question 44

Multiple Choice

Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places.
98% confidence; the sample size is 800, of which 40% are successes

• A) 0.0355
• B) 0.0339
• C) 0.0404
• D) 0.0446

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Definitions:

Encoding Specificity

The theory that memory is enhanced when information available at encoding is also available at retrieval.

Interference Theory

The view that we may forget stored material because other learning interferes with it.

Serial-position Effect

A cognitive phenomenon where people tend to remember the first and last items in a series best, and the middle items worst.

Retrospective Memory

Memory for past events, activities, and learning experiences, as shown by explicit (episodic and semantic) and implicit memories.