Let X represent the full height of a certain species of tree. Assume that X has a normal probability distribution with a mean of 52.1 ft and a standard deviation of 6.3 ft. A tree of this type grows in my backyard, and it stands 45.2 feet tall. Find the probability that the height of a randomly selected tree is as tall as mine or shorter. Round zscores to two decimal places for calculations. P(X 64.7) = [:3 Enter your answers as decimals accurate to 4 decimal places