According to the WHO MONICA Project the mean blood pressure forpeople in China is 128 mmHg with a standard deviation of 23 mmHg(Kuulasmaa, Hense&Tolonen, 1998). Blood pressure is normallydistributed.
A.State the random variable.
B. Suppose a sample of size 15 is taken. State the shape of thedistribution of the sample mean.
C. Suppose a sample of size 15 is taken. State the mean of thesample mean.
D.Suppose a sample of size 15 is taken. State the standarddeviation of the sample mean.
E. Suppose a sample of size 15 is taken. Find the probabilitythat the sample mean blood pressure is more than 135 mmHg.
F. Would it be unusual to find a sample mean of 15 people inChina of more than 135 mmHg? Why or why not?
If you did find a sample mean for 15 people in China to be morethan 135 mmHg, what might you conclude?
