The Security Department of a State University Is Planning Its

question 15

Multiple Choice

The security department of a state university is planning its budget for the next year.In estimating the man-hours for security during university sponsored music concerts,the average length of music concerts is needed.A random sample from thirty-six security departments at universities was taken and the sample mean length of concerts was 160 minutes.Suppose the population standard deviation is 45 minutes.A 95 percent confidence interval for the true mean duration of music concerts is:

• A) 157.55 to 162.45.
• B) 147.63 to 172.37.
• C) 71.8 to 248.2.
• D) 145.3 to 174.7.
• E) 1601.96(45 / 36).

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Definitions:

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Broad personality factors that encompass a range of more specific traits or behaviors.

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The fundamental components or framework that form the foundation or underpinning of a system, organization, or object.

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Groups of individuals that vary by certain characteristics, such as culture, ethnicity, language, religion, and socioeconomic status.