The Post Office Has Established a Record in a Major

question 41

Multiple Choice

The Post Office has established a record in a major midwestern city for delivering 90 percent of its local mail the next working day. If you mail eight local letters, what is the average number you expect to be delivered the next day?

• A) 3.6
• B) 4.0
• C) 7.2
• D) 2.7

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Definitions:

Statistical Results

Outcomes derived from the application of statistical methods, often used to infer conclusions from data.

Inferential Statistics

Mathematical procedures that allow a researcher to draw further claims from a data pattern, including claims about whether the pattern observed in the sample is likely to be observed in other samples.

Examining Data

The process of analyzing information or facts to draw conclusions or make decisions.

Central Tendency

A statistical measure that identifies the center of a data set, represented by mean, median, or mode.