SOLUTION: Assume that systolic blood pressure readings are normally distributed with a mean of 122 and a standard deviation of 9.6. If 144 individuals are selcted at random, determine the p

Question 375569: Assume that systolic blood pressure readings are normally distributed with a mean of 122 and a standard deviation of 9.6. If 144 individuals are selcted at random, determine the probability that the mean (systolic) blood pressure of these individuals will be less than 124.
I don't know where to begin!
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
The sampling distribution of the means would also be normally distributed with a and standard deviation . Then

=. You can easily get the probability now by looking at a usual standard normal table.
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