The Manufacture of a Product Requires Five Sequential Steps

Multiple Choice

The manufacture of a product requires five sequential steps. The reliability of each of the steps is 0.97, 0.88, 0.95, 0.92, and 0.99, respectively. What is the reliability of the manufacturing process (system) ?

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