Elwin Osbourne,CIO at GFS,Inc

question 12

Multiple Choice

Elwin Osbourne,CIO at GFS,Inc.,is studying employee use of GFS e-mail for non-business communications.He plans to use a 98% confidence interval estimate of the proportion of e-mail messages that are non-business; he will accept a 0.05 error. Previous studies indicate that approximately 30% of employee e-mail is not business related.Elwin should sample _______ e-mail messages.

• A) 323
• B) 12
• C) 457
• D) 14
• E) 100

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Definitions:

Representative Sample

A subset of a population that accurately reflects the members of the entire population, used in statistical analysis for predicting and understanding broader trends.

Population

The total number of people occupying an area or making up a whole group, often studied in demographics.

Draw

In a general context, refers to reaching a conclusion or result that is even or tied; in art, it refers to the act of producing an image on a surface by making lines and marks.

Conclusions

Final decisions or opinions formed after a period of consideration or investigation.