The length of blades of grass mown from a lawn are modelled by a uniform distribution between
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The length of blades of grass mown from a lawn are modelled by a uniform distribution between 1 cm and 5 cm.
(a) Find the standard deviation of this distribution.
(b) Find the percentage of blades of grass whose lengths lie within one standard deviation of the mean length.
(c) A better model may be a triangular distribution as shown.
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A Concise Course In Advanced Level Statistics With Worked Examples
ISBN: 9780748754755
4th Edition
Authors: J. Crawshaw, J. Chambers
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