Earth's atmosphere long ago, we can examine the gas in cient amber. Measurements taken from 9 specimens of ceous era (75-95 million years ago) show concentrations of 95,900 parts per million and a standard deviation of interval for the mean concentration of nitrogen in the late tudent's t-distribution. f freedom. em is: t is: 4,000 7,000 D,000 0,000 2,000
Earth's atmosphere long ago, we can examine the gas in cient amber. Measurements taken from 9 specimens of ceous era (75-95 million years ago) show concentrations of 95,900 parts per million and a standard deviation of interval for the mean concentration of nitrogen in the late tudent's t-distribution. f freedom. em is: t is: 4,000 7,000 D,000 0,000 2,000
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:To discover the nature of Earth's atmosphere long ago, we can examine the gas in
bubbles trapped inside ancient amber. Measurements taken from 9 specimens of
amber from the late Cretaceous era (75-95 million years ago) show concentrations of
nitrogen with a mean of 595,900 parts per million and a standard deviation of
62,550 ppm.
Devise a 95% confidence interval for the mean concentration of nitrogen in the late
Cretaceous era. Use the Student's t-distribution.
There are
degrees of freedom.
The t-value for this problem is:
The 95% Confidence Limit is:
8, 2.31, 548,000 - 644,000
9, 1.85, 575,000 - 617,000
8, 2.44, 582,000 - 610,000
9, 2.44, 582,000 - 610,000
8, 1.15, 563,000 - 629,000
Transcribed Image Text:A hydrologist is interested in studying the influence of rainfall on runoff in a drainage
basin. Rainfall and runoff are measured during 20 rainfall events. Model the
relationship.
What are the variables and the type of measurement for these variables?
slope (numerical) and itercept (numerical)
dependent variable (nominal) and independent vatiable (nominal)
Rainfall (total mm) and Runoff (liters/36 hours)
geographic location (lat/long), area of watershed (hectares), and substrate type
(rock/soil/vegitation)
rainfall (numerical) and runoff (numerical)
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