SOLUTION: Suppose we have a set of blood pressures with a mean of 80 Diastolic, and a sample standard deviation of 5 points. Assuming a normal distribution of diastolic blood pressures, betw

Question 654118: Suppose we have a set of blood pressures with a mean of 80 Diastolic, and a sample standard deviation of 5 points. Assuming a normal distribution of diastolic blood pressures, between what two values should 95% of all Diastolic blood pressures lie?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose we have a set of blood pressures with a mean of 80 Diastolic, and a sample standard deviation of 5 points. Assuming a normal distribution of diastolic blood pressures, between what two values should 95% of all Diastolic blood pressures lie?
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The z-values for that interval are +-1.96
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Solve for "x" using x = z*s+u
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Lower Limit: -1.96*5+80 = 70.2
Upper Limit: +1.96*5+80 = 89.8
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Cheers,
Stan H.
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