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In a simple regression the error standard deviation is $2$ and $\sum_i (x_i - \bar x)^2 = 25$ . What is the standard error of the slope?

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In a simple regression the error standard deviation is 222 and ∑i(xi−xˉ)2=25\sum_i (x_i - \bar x)^2 = 25∑i​(xi​−xˉ)2=25. What is the standard error of the slope?

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In a simple regression the error standard deviation is $2$ and $\sum_i (x_i - \bar x)^2 = 25$ . What is the standard error of the slope?