lfwe assume that the pH level of the stomach is a normally distributed random quantity with true mean and standard deviation 4, 0. 6, respectively: a. What would be the distribution of the sample mean, .1? , based on a sample of size n=100? Justify your answers b. Suppose that we randomly picked n=100 individuals from the population above. How likely is it that the sample mean pH level based on those 100 individuals will fall between 3.9 and 4.01 units