One sample has a mean of M = 10 and a second sample has a mean of M = 8. The two samples are combined into a single set

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answerhappygod
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One sample has a mean of M = 10 and a second sample has a mean of M = 8. The two samples are combined into a single set

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One sample has a mean of M = 10 and a second sample has a mean of M = 8. The two samples are combined into a single set of scores.
a) What is the mean for the combined set if the first sample has n = 6 and the second sample has n = 4?
b) What is the mean for the combined set if the first sample has n = 4 and the second sample nas n = 6?
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