Given a Mean of -7

question 1

Multiple Choice

Given a mean of -7.8 and a standard deviation of 16 from a normally distributed sample,what is the probability of an observation being below 12.0?

• A) 0.51
• B) 0.61
• C) 0.71
• D) 0.81

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Definitions:

Average Service Time

The mean time taken to complete a service task, often used as a metric in operations management and customer service analysis.

Queue Length

The number of items or people waiting in a line to be processed or serviced.

FCFS

"First Come, First Served," a principle of service priority in which requests are processed in the order that they are received.

Arrival Rate

In queue theory, it refers to the average number of units (e.g., people, objects, or data packets) arriving at a system or facility per time unit.