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The standard deviations are 8 amp 7 obtain the mean and

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Reference no: EM13591067

The means of two samples of size 50 and 100 respectively are 54·4 & 50·3 and the standard deviations are 8 & 7. Obtain the mean and standard deviation of the sample of size 150 obtained by combining the two samples.

Reference no: EM13591067

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