Mathematics (AS & A Level) · Oct / Nov 2018 · Paper 62 · Question 2
9709
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The question as text
The following back-to-back stem-and-leaf diagram shows the reaction times in seconds in an experiment involving two groups of people, A and B. A B (4) 4 2 0 0 20 5 6 7 (3) (5) 9 8 5 0 0 21 1 2 2 3 7 7 (6) (8) 9 8 7 5 3 2 2 2 22 1 3 5 6 6 8 9 (7) (6) 8 7 6 5 2 1 23 4 5 7 8 8 9 9 9 (8) (3) 8 6 3 24 2 4 5 6 7 8 8 (7) (1) 0 25 0 2 7 8 (4) Key: 5 22 6 means a reaction time of 0.225 seconds for A and 0.226 seconds for B
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2(i)[3]
2(ii)[3]
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