If the Scores on a Certain Exam Are Normally Distributed

question 6

Multiple Choice

If the scores on a certain exam are normally distributed with a mean of 79 and a standard deviation of 7 , then 95% of the scores will fall in which interval?

• A) [72,86]
• B) [58,100]
• C) [68.5,89.5]
• D) [65,93]
• E) [75,83]

---

Definitions:

Secondary Circuit

An auxiliary or additional circuit that works alongside or provides support to the main electrical circuit.

Steering Column

The shaft or column that connects the steering wheel to the steering mechanism, facilitating vehicle steering control.

Hand Control Valve

A manually operated valve designed for controlling the flow of liquids or gases, often used in industrial applications or within vehicle hydraulic systems.

Treadle Valve

A type of foot-operated air valve used in heavy vehicles, controlling air pressure to the brakes when pressed.