Question
In: Statistics and Probability
A health study reported that, in one country, systolic blood pressure readings have a mean of...
A health study reported that, in one country, systolic blood pressure readings have a mean of 125 and a standard deviation of 14. A reading above 140 is considered to be high blood pressure. Complete parts a through d below.
a. z score of a 125 blood pressure reading
b. assuming normal distribution, wqhat proportion of the population ahas high blood pressure.
c. proportion of popultion between 125 and 140
d. Find the 90th percentile blood pressure readings.
please show work. I really dont know what im doing
Solutions
Expert Solution
Let , 
a. The Z score of a 125 blood pressure reading is ,
b. Since , the reading above 140 is considered to be high blood pressure
Therefore , the proportion of the population ahas high blood pressure is ,
c.
d.The 90th percentile blood pressure readings is ,
From normal probability table ,
orchestra answered 2 years agoRelated Solutions
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