The mean amount of time it takes a kidney stone to pass is 12 days and the standard deviation is 5 days. Suppose that one individual is randomly chosen. Let X = time to pass the kidney stone. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( b. Find the probability that a randomly selected person with a kidney stone will take longer than 11 days to pass it. c. Find the minimum number for the upper quarter of the time to pass kidney stone. days.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The mean amount of time it takes a kidney stone to pass is
12 days and the standard deviation is 5 days. Suppose that
one individual is randomly chosen. Let X = time to pass the
kidney stone. Round all answers to 4 decimal places where
possible.
a. What is the distribution of X? X - N(
2
b. Find the probability that a randomly selected person with
a kidney stone will take longer than 11 days to pass it.
c. Find the minimum number for the upper quarter of the
time to pass a kidney stone.
days.
Transcribed Image Text:The mean amount of time it takes a kidney stone to pass is 12 days and the standard deviation is 5 days. Suppose that one individual is randomly chosen. Let X = time to pass the kidney stone. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( 2 b. Find the probability that a randomly selected person with a kidney stone will take longer than 11 days to pass it. c. Find the minimum number for the upper quarter of the time to pass a kidney stone. days.
The mean height of an adult giraffe is 17 feet. Suppose that
the distribution is normally distributed with standard
deviation 1 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(
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 16.5 feet tall?
e. What is the probability that a randomly selected giraffe
will be between 17.2 and 18 feet tall?
f. The 90th percentile for the height of giraffes is
ft.
Transcribed Image Text:The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally distributed with standard deviation 1 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( 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 16.5 feet tall? e. What is the probability that a randomly selected giraffe will be between 17.2 and 18 feet tall? f. The 90th percentile for the height of giraffes is ft.
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