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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 0.8 feet. Let X be the height of a randomly selected adult giraffe. Round all answers to 4 decimal places where appropriate.

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 21 foot tall? (Round to 2 decimal places.)

d. What is the probability that a randomly selected giraffe will be shorter than 20 feet tall?

e. What is the probability that a randomly selected giraffe will be between 18.6 and 19.3 feet tall?

f. The 85th percentile for the height of giraffes is ft. (Round to 1 decimal place.)

Math   Statistics-And-Probability   
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