Systolic Blood pressure - Assume that the mena systolic bloodpressure of normal

Question

Systolic Blood pressure - Assume that the mena systolic bloodpressure of normal adults is 120 millimeters of mercury (mm Hg) andthe standard deviations is 5.6. Assume the variable isnormally distributed.    a. If an individual is selected, find theprobability that the individual's pressure will be between 120 and121.8 mm Hg.    b. If a sample of 30 adults is randomlyselected, find the probability that the sample mean will be between120 and 121.8 mm Hg.    c. Why is the answer to part a so muchsmaller that the answer to part b ? Systolic Blood pressure - Assume that the mena systolic bloodpressure of normal adults is 120 millimeters of mercury (mm Hg) andthe standard deviations is 5.6. Assume the variable isnormally distributed.    a. If an individual is selected, find theprobability that the individual's pressure will be between 120 and121.8 mm Hg.    b. If a sample of 30 adults is randomlyselected, find the probability that the sample mean will be between120 and 121.8 mm Hg.    c. Why is the answer to part a so muchsmaller that the answer to part b ?

Explanation / Answer

Given =120, s=5.6 (a) P(120

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