Intro Stats, Books a la carte Plus NEW MyLab Statistics with Pearson eText -- Access Card Package (5th Edition)

5th Edition

ISBN: 9780134210247

Author: Richard D. De Veaux, Paul Velleman, David E. Bock

Publisher: PEARSON

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Chapter 4, Problem 20E

Tendon transfers People with spinal cord injuries may lose function in some, but not all, of their muscles. The ability to push oneself up is particularly important for shifting position when seated and for transferring into and out of wheelchairs. Surgeons compared two operations to restore the ability to push up in children. The histogram shows scores rating pushing strength two years after surgery, and the boxplots compare results for the two surgical methods. (M. J. Mulcahey, C. Lutz, S. H. Kozen, R. R. Betz, “Prospective evaluation of biceps to triceps and deltoid to triceps for elbow extension in tetraplegia,” Journal of Hand Surgery, 28, 6, 2003)

Chapter 4, Problem 20E, Tendon transfers People with spinal cord injuries may lose function in some, but not all, of their

a) Describe the shape of this distribution.
b) What is the range of the strength scores?
c) What fact about the results of the two procedures is hidden in the histogram?
d) Which method had the higher (better) median score?
e) Was that method always better?
f) Which method produced more consistent results? Explain.

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Chapter 4, Problem 19E

Chapter 4, Problem 21E

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Chapter 4 Solutions

Intro Stats, Books a la carte Plus NEW MyLab Statistics with Pearson eText -- Access Card Package (5th Edition)

Ch. 4.1 - The Bureau of Transportation Statistics of the...Ch. 4.1 - The Bureau of Transportation Statistics of the...Ch. 4.1 - Prob. 3JC Ch. 4 - Load factors 2016 The Research and Innovative...Ch. 4 - Load factors, 2016 by season We can also compare...Ch. 4 - Prob. 3E Ch. 4 - Prisons 2014 In a way, boxplots are the opposite...Ch. 4 - Load factors 2016 by month Here is a display of...Ch. 4 - Prob. 6E Ch. 4 - Prob. 7E

Ch. 4 - Prob. 8E Ch. 4 - Prob. 9E Ch. 4 - Exoplanets re-expressed Here are the exoplanet...Ch. 4 - Pizza prices by city (Data in Pizza prices) The...Ch. 4 - Cost of living 2016, selected cities To help...Ch. 4 - Prob. 16E Ch. 4 - Prob. 17E Ch. 4 - Slalom times 2014 The Mens Giant Slalom skiing...Ch. 4 - Sugar in cereals Sugar is a major ingredient in...Ch. 4 - Tendon transfers People with spinal cord injuries...Ch. 4 - Population growth, 2010 by region (Data in...Ch. 4 - Camp sites Shown below are the histogram and...Ch. 4 - Hospital stays The U.S. National Center for Health...Ch. 4 - Deaths 2014 A National Vital Statistics Report...Ch. 4 - Womens basketball Here are boxplots of the points...Ch. 4 - Prob. 26E Ch. 4 - Marriage age In 1975, did men and women marry at...Ch. 4 - Fuel economy and cylinders Describe what these...Ch. 4 - Prob. 29E Ch. 4 - Ozone Ozone levels (in parts per billion, ppb)...Ch. 4 - Test scores Three statistics classes all took the...Ch. 4 - Prob. 32E Ch. 4 - Graduation? A survey of major universities asked...Ch. 4 - Vineyards Here are summary statistics for the...Ch. 4 - Caffeine A student study of the effects of...Ch. 4 - SAT scores Here are the summary statistics for...Ch. 4 - Prob. 37E Ch. 4 - Framingham cholesterol The Framingham Heart Study...Ch. 4 - Prob. 39E Ch. 4 - Cloud seeding In an experiment to determine...Ch. 4 - Industrial experiment Engineers at a computer...Ch. 4 - Cholesterol and smoking A study that examined the...Ch. 4 - Prob. 43E Ch. 4 - Assets Here is a histogram of the assets (in...Ch. 4 - Prob. 46E Ch. 4 - Assets again Here are the same data you saw in...Ch. 4 - Rainmakers The table lists the amounts of rainfall...Ch. 4 - Stereograms Stereograms appear to be composed...Ch. 4 - Stereograms, revisited Because of the skewness of...Ch. 4 - Prob. 51E Ch. 4 - Prob. 52E

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Solution Summary: The author explains the shape of the distribution of pushing strength scores of patients after two years of surgery, and the box plots compare the results for the two surgical methods.

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