An ATM Machine Provides Four Sequential Steps in Processing a Transaction

question 12

Multiple Choice

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?

• A) Less than 0.60
• B) Equal to or greater than 0.60 but less than 0.70
• C) Equal to or greater than 0.70 but less than 0.80
• D) Equal to or greater than 0.80 but less than 0.90