The Manager of a Computer Help Desk Operation in Moncton

question 6

Multiple Choice

The manager of a computer help desk operation in Moncton has collected enough data to conclude that the time per call is normally distributed with a mean equal to 8.21 minutes and a standard deviation of 2.14 minutes. Based on this, what is the probability that a call will last longer than 13 minutes?

• A) 0.0125
• B) 0.4875
• C) 0.5125
• D) 0.9875
• E) .0224

---

Definitions:

Increasing Rate

A situation where something grows or rises in value at a progressively higher pace over time.

Marginal Cost

The expenditure associated with creating another single unit of a product or service.

Average Variable Cost

The total variable costs of production divided by the quantity of output produced, illustrating the per-unit variable cost.

Total Cost

The sum of all expenses incurred in the production of goods or services, including fixed and variable costs.