The diagram below identifies the elements of service as provided by a soft drink vending machine.Each element has an estimate of its own reliability,independent of the others.What is the reliability of the "system"? 
Definitions:
Online Consumers
Individuals who purchase goods or services over the internet, utilizing digital platforms for shopping rather than traditional brick-and-mortar stores.
Visit Websites
The act of accessing and viewing content on web pages through a browser, usually for information or transaction purposes.
Subscription Commerce
A business model where customers pay a recurring price at regular intervals to access a product or service.
Recurring Schedule
A planned sequence of events or actions that repeat at regular intervals.
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