Find standard deviation of distribution of differences

Reference no: EM13128266

For a particular study comparing means of two samples, the first sample has 21 participants and an estimated population variance of 100; the second sample has 31 participants and an estimated population variance of 200. a.) What is the standard deviation of the distribution of differences between means? b.) What is the mean? c.) What will be its shape?

Reference no: EM13128266

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