Intro Stats, Books a la Carte Edition (5th Edition)
5th Edition
ISBN: 9780134210285
Author: Richard D. De Veaux, Paul Velleman, David E. Bock
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 61E
Education and mortality The following software output is based on the mortality rate (deaths per 100,000 people) and the education level (average number of years in school) for 58 U.S. cities.
Dependent variable is Mortality
R-squared = 41.0%
s = 47.92 with 58 – 2 = 56 degrees of freedom
- a) Comment on the assumptions for inference.
- b) Is there evidence of a strong association between the level of Education in a city and the Mortality rate? Test an appropriate hypothesis and state your conclusion.
- c) Can we conclude that getting more education is likely (on average) to prolong your life? Why or why not?
- d) Find a 95% confidence interval for the slope of the true relationship.
- e) Explain what your interval means.
- f) Find a 95% confidence interval for the average Mortality rate in cities where the adult population completed an average of 12 years of school.
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Intro Stats, Books a la Carte Edition (5th Edition)
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