A Researcher Records the Number of Job Openings Among Small

question 65

Multiple Choice

A researcher records the number of job openings among small businesses.She finds that the probability that a small business has 0 job openings is p = .22; 1 job opening is p = .45; 2 job openings is p = .08; and 3 job openings is p = .25.What is the probability that a small business has at least 2 job openings?

• A) .08
• B) .25
• C) .33
• D) .67

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Definitions:

Confidence Interval

A span of numbers, calculated from observed data statistics, that probably encompasses an unknown parameter of a population.

Sample

A group or set collected from a larger population for the purpose of statistical analysis, representing the larger group.

Hypothesis Testing

A statistical method that uses sample data to evaluate a hypothesis about a population parameter.