An ATM Machine Provides Four Sequential Steps in Processing a Transaction.Over

question 82

Essay

An ATM machine provides four sequential steps in processing a transaction.Over the last quarter, the reliability of each of these steps was 0.92, 0.97, 0.95 and 0.90.What is the overall reliability of the machine? How much can reliability be improved if the reliability of the fourth step is increased to 0.98?

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Definitions:

Centralization

The concentration of decision-making authority at the upper levels of an organization, resulting in a narrower span of control.

Concentration of Authority

The centralization of decision-making power within a few positions or persons in an organization.

Organization Levels

The distinct layers of authority within an organization that define hierarchy and the division of roles and responsibilities.

Centralization

The concentration of decision-making authority at the top levels of the organizational hierarchy.