Mathematics, 15.10.2019 16:30, marcoantonioperezpan

Asample of 12 measurements has a mean of 8.5 and a sample of 20 measurements has a mean of 7.5. find the mean of all 32 measurements

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Asample of 12 measurements has a mean of 8.5 and a sample of 20 measurements has a mean of 7.5. find...