# general maths

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A study of motor vehicle rates in the 50 states reveals

that traffic death rates (deaths per 100 million motor

vehicle miles driven) can be modeled by the normal

curve. The data suggest that the distribution has a mean

of 5.3 and a standard deviation of 1.3. Sketch the normal

curve, showing the mean and standard deviation.

• general maths -

The following link will give a good introduction to the concepts of a normal distributtion curve. Note that the article uses μ for mean, and σ for standard deviation.
http://en.wikipedia.org/wiki/Normal_distribution

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