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 24 is...
a. taken, the standard error of the mean is 5.75.
b. taken, the standard error of the mean is 4.6.
c. taken, the standard error of the mean is 6.92.
d. taken, the standard error of the mean is 7.6.