For the following two samples, A and B, the sampling standard error for the difference between the two means is: A 14.4 27.6 25.2 38.4 18 19.2 30 B 27.6 38.4 28.8 34.8 30 48 39.6 Hint: For the intermediate steps where you need to calculate sample standard deviations, I recommend using Excel. Answer:

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