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OpenStudy (anonymous):
The mean of a normally distributed dataset is 12, and the standard deviation is 2. what ? % of the data points lies between 8 and 16.
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OpenStudy (anonymous):
@Michele_Laino can u help
OpenStudy (michele_laino):
we have to compute these two quantities: (16-12)/2=...? (12-8)/2=...?
OpenStudy (anonymous):
I do it on a bell curve and it is subtracted and added the first one is 2
OpenStudy (anonymous):
second one is 2
OpenStudy (michele_laino):
both of those quantities are equal to 2, so we have to use the table of the erf function, and find this probability: |dw:1430066442381:dw|
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