Mathematics (AS & A Level) · Oct / Nov 2017 · Paper 61 · Question 4
9709
As printed in the paper
The question as text
The ages of a group of 12 people at an Art class have mean 48.7 years and standard deviation 7.65 years. The ages of a group of 7 people at another Art class have mean 38.1 years and standard deviation 4.2 years.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
4(i)[2]
4(ii)[4]
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