MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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According to the WHO MONICA Project the mean blood pressure for people in China is 128 mmHg with a standard deviation of 23 mmHg. Blood pressure is normally distributed. Suppose a sample of size 22 is taken. 

1)Find the probability that the sample mean blood pressure of the 22 randomly selected people in China is less than 131.MmHg

2)Find the probability that the sample mean blood pressure of the 22 randomly selected people in China is more than 137.53

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