The partial pressure of oxygen, PaO2, is measure of amount of oxygen in the blood. Suppose that the distribution of PaO2 levels among newborns has average of 38 mm Hg and standard deviation 9. ^6 If we take a sample of size n=25
a) Determine the probability that the sample average will be greater than 36?
b) Determine the probability that the sample average will be greater than 41?