A Service Requires Three Steps

question 105

Multiple Choice

A service requires three steps. At each step there is the chance that something will go wrong. The reliabilities of each step are 0.70, 0.90, and 0.98. What is the reliability of the total service?

• A) less than or equal to 0.55
• B) greater than 0.55 but less than or equal to 0.60
• C) greater than 0.60 but less than or equal to 0.65
• D) greater than 0.65

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Definitions:

Constant Minimum Proportion

An unwavering, smallest fraction or amount of something in relation to a whole.

Weber's Law

A principle stating that the change in a stimulus that will be just noticeable is a constant ratio of the original stimulus.

Stimuli

External agents, objects, or events that invoke reactions or responses from organisms, including physical, chemical, and biological factors.

Sensory Adaptation

A neurological phenomenon by which individuals become less sensitive to unchanging environmental stimuli over time.