A factory produces two types of tyres. In an experiment in the working life of these tyres the following results were obtained Length of life (00's hrs) Tyre: A B 15-17 50 40 17-19 110 300 State which type of tyre is more stable? 19-21 260 120 21-23 100 80 23-25 80 60

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A: please see the attachment.................

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