Nationally, 83% of Americans have earned a high school diploma. We want to see if the proportion if PA high school students who have school diploma is greater than 83%. Suppose a representative sample of 225 Pennsylvanians is taken and each is asked if they have earned a high school diploma. Consider the sample proportion (phat) of PA who have a HS diploma. If this was a true random sample of size 225 from a population of PA where 83% earned a diploma, what whould the mean and standard deviaiton be of phat?