A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow compar…
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100%

The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 121 and standard deviation of 22 .

Someone qualifies as having Stage 2 high blood pressure if their systolic blood pressure is 160 or higher.

Express your answers as a decimal and round to 2 decimal places.

a. Around what percentage of adults in the USA have stage 2 high blood pressure? Give your answer rounded to two decimal places.
___%

b. Stage 1 high BP is specified as systolic BP between 140 and 160. What percentage of adults in the US qualify for stage 1?
______%

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