Use the Normal Model to Approximate the Binomial

question 12

Multiple Choice

Use the Normal model to approximate the Binomial.
-The unemployment rate of persons with a disability is typically higher than for those
With no disability. Recent statistics report that this rate is 14.5%. An advocacy group in
A large city located in the southeastern region of the U.S. selected a random sample of
250 persons with a disability. What is the probability that at least 20 persons in this
Sample are unemployed?

• A) 0.8686
• B) 0.9982
• C) 0.6573
• D) 0.1314
• E) 0.0018

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Definitions:

Standard Deviation

A measure that indicates the amount of variation or dispersion of a set of values.

Raw Score

The original, unmodified score obtained by an individual on a test or assessment.

Hypothesized Population Mean

The expected mean value of a population, proposed prior to conducting a study.

Standard Deviation

A numerical value indicating the spread of data points around the mean of the dataset.