Mathematics (AS & A Level) · Oct / Nov 2021 · Paper 61 · Question 1
9709
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The question as text
It is known that the height H, in metres, of trees of a certain kind has the distribution N12.5, 10.24 . A scientist takes a random sample of 25 trees of this kind and finds the sample mean, H, of the heights.
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1(a)[2]
1(b)[3]
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