The Average Score of 100 Students Taking a Statistics Final

question 55

Multiple Choice

The average score of 100 students taking a statistics final was 70 with a standard deviation of 7. Assuming a normal distribution, approximately how many scored 90 or higher?

• A) 0.4979
• B) 0.0021
• C) 0.9979
• D) 2.86

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Definitions:

Brakes

Mechanical or electronic devices that slow or stop the motion of a vehicle or machine, typically by applying friction or electromagnetic forces.

Duals

Pairs of components, like tires, that are used together on each side of a vehicle axle to increase stability, payload capacity, or traction.

Adequate Spacing

Sufficient distance maintained between objects or components to ensure proper function, safety, or aesthetics.

O'Clock Positions

A method of describing the location or orientation of objects (e.g., vehicle parts) by comparing them to positions on a clock face.