SOLUTION: Suppose we have a set of blood pressures with a mean of 120 Systolic, and a sample standard deviation of 15 points. If we assume a normal distribution of Systolic blood pressures,

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Question 375967: Suppose we have a set of blood pressures with a mean of 120 Systolic, and a sample standard deviation of 15 points. If we assume a normal distribution of Systolic blood pressures, then between what two values can we be assured 99.7% of all Systolic blood pressures will lie?

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
. Then
%28alpha+-+120%29%2F15+=+-2.96, and %28beta+-+120%29%2F15+=+2.96. We get
alpha+=+75.6, and beta+=+164.44.