Posted by **Twg** on Wednesday, August 12, 2009 at 12:07am.

The mean systolic blood pressure of adult males is normally distributed with a mean of 138 (millimeters of mercury) and a standard deviation of 9.7. What percent of adult males have blood pressure between 161.28 and 164.9?

- MATH Prob. -
**Reiny**, Wednesday, August 12, 2009 at 9:29am
My favourite webpage for this kind of question:

http://davidmlane.com/hyperstat/z_table.html

Just enter the data and pick the "between" option

- MATH Prob. -
**Twg**, Wednesday, August 12, 2009 at 7:49pm
I don't know if I got it right but my answer was 0.005422 in the top calculator and for the bottom it was 0.05. Is that correct?

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