On a normal curve,99 percent of all the cases would be found between which two SDs?
A) 0 and +3
B) -1 and +2
C) -2 and +2
D) -3 and +3

Name: On a normal curve,99 percent of all the cases would be found between which two SDs? A) 0 and +3 B) -1 and +2 C) -2 and +2 D) -3 and +3
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Quizplus · Accepted Answer

On a normal curve, 99% of all the cases would be found between the mean - 3 SDs and the mean + 3 SDs. So, option D (-3 and +3) is the best choice.

On a Normal Curve,99 Percent of All the Cases Would