What is the mean age of the third group

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Reference no: EM131371517

An experimenter divides 100 subjects into three groups two of which have the same size and the third of which is as same as the other two combined. If the mean ages of the two smaller groups are 21 years and 29 years, what is the mean age of the third group if the grand mean is 33 years?

Reference no: EM131371517

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