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The mean height of an adult giraffe is 18 feet. Suppose that the distribution is normally...

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. Fill the blank spaces below. Round all answers to 4 decimal places where possible.

a. What is the distribution of X? X ~ N( ____,____ )

b. What is the median giraffe height? ______ ft.

c. What is the Z-score for a giraffe that is 20 foot tall? ___________

d. What is the probability that a randomly selected giraffe will be shorter than 18.9 feet tall? ___________

e. What is the probability that a randomly selected giraffe will be between 18.3 and 19.2 feet tall? ___________

f. The 85th percentile for the height of giraffes is ______ ft.

Math   Statistics-And-Probability   
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