A Crew of Mechanics at the Highway Department Garage Repair

question 23

Essay

A crew of mechanics at the Highway Department garage repair vehicles that break down at an average of λ = 8 vehicles per day (approximately Poisson in nature). The mechanic crew can service an average of μ= 11 vehicles per day with a repair time distribution that approximates an exponential distribution. The crew cost is approximately $300 per day. The cost associated with lost productivity from the breakdown is estimated at $150 per vehicle per day (or any fraction thereof). Which is cheaper, the existing system with one service crew, or a revised system with two service crews?

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Definitions:

Name Box

A feature in spreadsheet applications that displays the cell reference or name of the selected cell.

Active Cell

The currently selected cell in a spreadsheet where data can be entered or edited, usually highlighted by a border.

Object Dependencies

This term refers to the relationships among objects in a database or software system, where changes to one object may affect others.

Linked Tables

In database management, tables that are connected or related to each other through common fields, allowing for the synchronization of data across tables.