About what percentage of the area under the normal dis- tribution curve falls within 1 standard deviation above
and below the mean? 2 standard deviations? 3 standard
deviations?

titty rosevelt

Step-by-step explanation

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Answer :

hope this help !

Step-by-step explanation:

Under this rule, 68% of the data falls within one standard deviation, 95% percent within two standard deviations, and 99.7% within three standard deviations from the mean.

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answer: 12

step-by-step explanation:

because yes