The Manager of a Computer Help Desk Operation Has Collected

question 83

Multiple Choice

The manager of a computer help desk operation has collected enough data to conclude that the distribution of time per call is normally distributed with a mean equal to 8.21 minutes and a standard deviation of 2.14 minutes. The manager has decided to have a signal system attached to the phone so that after a certain period of time, a sound will occur on her employees' phone if she exceeds the time limit. The manager wants to set the time limit at a level such that it will sound on only 8 percent of all calls. The time limit should be:

• A) 10.35 minutes.
• B) approximately 5.19 minutes.
• C) about 14.58 minutes.
• D) about 11.23 minutes.

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Definitions:

Telophase

The final phase of cell division, during which chromosomes de-condense, nuclear envelopes re-form around the daughter nuclei, and cytokinesis usually occurs, resulting in two separate cells.

Anaphase

Stage of mitosis during which sister chromatids separate and move toward opposite spindle poles.

Opposite Poles

Refers to the two extremities of an axis, having completely contrasting characteristics, typically used in the context of magnets or geographical poles.

Telophase

A phase of cell division in which chromosomes arrive at opposite poles of the cell and begin to de-condense, leading to the reformation of nuclear envelopes.