Operation: "Calculate an area under the Normal Curve". Express answers to 2 decimal places. (hint: you can use the "normalcdf" calculator function.) Let X = The height of a particular variety of Oak tree (in feet) where XN (60 ft, 3 ft) a) Find the proportion (i.e., the percentage) of trees that are shorter than 64 ft P(X <64)= % For 64 ft, what is the z-score= Show any calculations here: b) Find the proportion of trees that are taller than 59 ft P(X 59)= % For 59 ft, what is the z-score = Show any calculations here: c) Find the proportion of trees that are between 58 and 66 feet P(58