Mathematics (AS & A Level) · May / June 2020 · Paper 52 · Question 4
9709
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The question as text
Trees in the Redian forest are classified as tall, medium or short, according to their height. The heights can be modelled by a normal distribution with mean 40 m and standard deviation 12 m. Trees with a height of less than 25 m are classified as short.
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4(a)[3]
4(b)[2]
4(c)[3]
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