6.2Q12

The mean height of an adult giraffe is 17 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( 17 0.9 b. What is the median giraffe height? 17 V ft. c. What is the Z-score for a giraffe that is 18 foot tall? 1.1111 d. What is the probability that a randomly selected giraffe will be shorter than 17.6 feet tall? e. What is the probability that a randomly selected giraffe will be between 17.3 and 18.1 feet tall? f. The 75th percentile for the height of giraffes is ft