In an application to estimate the mean number of miles that downtown employees commute to work roundtrip each day,the following information is given: 
The point estimate for the true population mean is:
Definitions:
Standard Hours
A predetermined or established amount of time within which a task or job is expected to be completed.
Units Produced
The total volume or number of items manufactured during a given period.
Standard Costs
Predetermined costs for materials, labor, and overhead used as a benchmark to measure actual performance against.
Management
The process of planning, organizing, leading, and controlling an organization's resources to achieve its goals.
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