Mathematics (AS & A Level) · Feb / March 2021 · Paper 62 · Question 1
9709
As printed in the paper
The question as text
A construction company notes the time, t days, that it takes to build each house of a certain design. The results for a random sample of 60 such houses are summarised as follows. Σ t = 4820 Σ t2 = 392 050
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1(a)[6]
1(b)[1]
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