Systolic blood pressures in healthy adults are assumed to be normally distributed with a mean of 122.3 and a standard de

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Systolic blood pressures in healthy adults are assumed to be
normally distributed with
a mean of 122.3 and a standard deviation of 2.6. Use the
Z-distribution to determine
each of the following probabilities and write each answer using
correct probability
notation as needed.

(a) What is the probability a healthy adult will have a systolic
blood pressure less than
115.0?








(b) What proportion of healthy adults will have a systolic blood
pressure reading
between 120.0 and 124.0?









(c) What is the likelihood a healthy adult will have a systolic
blood pressure reading
above 130.0?






(d) What is the probability a healthy adult will have a systolic
blood pressure that is
within 1.50 standard deviations of the mean?





(e) Find the actual systolic blood pressure readings that are 1.50
standard deviations
below the mean and 1.50 standard deviations above the mean.