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A forest has a large number of tall trees. The heights of the trees are normally distributed with a mean of 78 metres and a standard deviation of 9 metres.
Sketch and label a normal curve that represents the heights of trees.

A forest has a large number of tall trees The heights of the trees are normally distributed with a mean of 78 metres and a standard deviation of 9 metres Sketch class=

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Each vertical line is a standard deviation, which is given as 9 meters. The middle line would be the mean, which is given as 78 meters.

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