Mathematics (AS & A Level) · May / June 2021 · Paper 53 · Question 5
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The question as text
The lengths of the leaves of a particular type of tree are modelled by a normal distribution. A scientist measures the lengths of a random sample of 500 leaves from this type of tree and finds that 42 are less than 4 cm long and 100 are more than 10 cm long.
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5(a)[5]
5(b)[4]
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