The difference of two sample means is 22, and the standard deviation of the difference of the sample means is 10.
The difference of the means of the two populations at a 95% confidence interval is ±________________.

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@xMissAlyCatx, can you help?

Oh my goodness, I've not done standard deviation in a while.
What do you think it is?

I have no earthly Idea, to be dead honest.

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