Mathematics (AS & A Level) · May / June 2018 · Paper 62 · Question 5

The lengths, t minutes, of 242 phone calls made by a family over a period of 1 week are summarised in the frequency table below. Length of phone call (t minutes) 0 < t ≤1 1 < t ≤2 2 < t ≤5 5 < t ≤10 10 < t ≤30 Frequency 14 46 102 a 40

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