SOLUTION: Assume that blood pressure readings are normally distributed with mean=120 and standard deviation =8. A blood pressure reading of 145 or more may require medical attention. What pe

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Question 375925: Assume that blood pressure readings are normally distributed with mean=120 and standard deviation =8. A blood pressure reading of 145 or more may require medical attention. What percentage of people have a blood pressure reading greater than 145?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
. Hence P%28X+%3E+145%29+=+P%28Z+%3E+3.125%29. Now you can find the percentage (which is just the probability) directly from the usual standard normal table.