For a symmetrical distribution approximately 68% of the cases are included between _________________?

By | May 23, 2021

A. X¯¯¯¯−S and X¯¯¯¯+S
B. X¯¯¯¯−2S and X¯¯¯¯+2S
C. X¯¯¯¯−3S and X¯¯¯¯+3S
D. None of these

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