SOLUTION: What s the answer to the following question: Estimate the proportion of observations falling within 1.2 standard deviations from the mean on a normal distribution.

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Question 355635: What s the answer to the following question:
Estimate the proportion of observations falling within 1.2 standard deviations from the mean on a normal distribution.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
In other words what is the area of the distribution curve between (-1.2%2Asigma,+1.2%2Asigma).
Find P%281.2%29=0.11507.
That's the area of the region up to 1.2%2Asigma.
The area from there to x=0 would then be,
A=0.5-0.11507
A=0.38493
Twice that area would give us the area from (-1.2%2Asigma,+1.2%2Asigma).
A=0.769861