carethegymnast1486 carethegymnast1486

19-04-2024
Mathematics

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A sample of 100 motorcar tyres has a mean of 20,000 km and a standard deviation of 800 km. A second sample of 150 tyres has a mean life of 22,000 km and a standard deviation of 900 km. is it true to say that the two samples were drawn from the same population?

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