The mean height of an adult giraffe is 18 feet. Suppose that the distribution is normally distributed with standard deviation 0.9 feet. Let X be the height of a randomly selected adult giraffe. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( 18 0.81 b. What is the median giraffe height? 18 ft. c. What is the Z-score for a giraffe that is 19 foot tall? 1 d. What is the probability that a randomly selected giraffe will be shorter than 17.8 feet tall? e. What is the probability that a randomly selected giraffe will be between 17.9 and 18.9 feet tall? f. The 75th percentile for the height of giraffes is ft