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Mathematics · Oct / Nov 2023 · Paper 22 · Question 23

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Some students record their reaction times. The table shows the results. Reaction time (t seconds) t 0 6 1 G t 6 10 1 G Frequency 18 16 On a histogram, the height of the block for the t 0 6 1 G interval is 7.5 cm. Calculate the height of the block for the t 6 10 1 G interval. cm [2]

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10 [2]

M1 for 7.5 oe or better ‣ 18 6 or [frequency densities] 3 and 4 or 45 and 4h or 45 and 40

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