Assume that the mean systolic blood pressure of normal adults is 120 millimeters of mercury (mm Hg)
Question:
a. If an individual is selected, find the probability that the individual’s pressure will be between 120 and 121.8 mm Hg.
b. If a sample of 30 adults is randomly selected, find the probability that the sample mean will be between 120 and 121.8 mm Hg.
c. Why is the answer to part a so much smaller than the answer to part b?
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P 0 z 032 06255 05 01255 or 125...View the full answer
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