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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Chapter 17.5, Problem 10JC

Recall the experiment comparing patients 4 weeks after surgery for carpal tunnel syndrome. The patients who had endoscopic surgery demonstrated a mean pinch strength of 9.1 kg compared to 7.6 kg for the open-incision patients.

10. The P-value of the test was less than 0.05. State a brief conclusion.

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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Chapter 17.5, Problem 9JC

Chapter 17.5, Problem 11JC

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Chapter 17 Solutions

Intro Stats, Books a la Carte Edition (5th Edition)

Ch. 17.2 - A public broadcasting station plans to launch a...Ch. 17.2 - Prob. 2JC Ch. 17.3 - Prob. 3JC Ch. 17.3 - Prob. 4JC Ch. 17.4 - Prob. 5JC Ch. 17.4 - Prob. 6JC Ch. 17.4 - Prob. 7JC Ch. 17.4 - Prob. 8JC Ch. 17.5 - Prob. 9JC Ch. 17.5 - Recall the experiment comparing patients 4 weeks...

Ch. 17.5 - Prob. 11JC Ch. 17 - Canada Suppose an advocacy organization surveys...Ch. 17 - Non-profits Do people who work for non-profit...Ch. 17 - Canada, deux The information in Exercise 1 was...Ch. 17 - Prob. 4E Ch. 17 - Prob. 5E Ch. 17 - Prob. 6E Ch. 17 - Prob. 7E Ch. 17 - Prob. 8E Ch. 17 - Prob. 9E Ch. 17 - Non-profits test Complete the analysis begun in...Ch. 17 - Prob. 11E Ch. 17 - Prob. 12E Ch. 17 - Prob. 13E Ch. 17 - Athlete ages, again Using the summary statistics...Ch. 17 - Prob. 15E Ch. 17 - Athlete ages, ninth inning The researchers in...Ch. 17 - Prob. 17E Ch. 17 - Athlete ages, overtime Repeat the test you did in...Ch. 17 - Prob. 19E Ch. 17 - Prob. 20E Ch. 17 - Prob. 21E Ch. 17 - Prob. 22E Ch. 17 - Prob. 23E Ch. 17 - Prob. 24E Ch. 17 - Prob. 25E Ch. 17 - Prob. 26E Ch. 17 - Prob. 27E Ch. 17 - Graduation The U.S. Department of Commerce...Ch. 17 - Prob. 29E Ch. 17 - Carpal tunnel The painful wrist condition called...Ch. 17 - Prob. 31E Ch. 17 - Prob. 32E Ch. 17 - Ear infections A new vaccine was recently tested...Ch. 17 - Anorexia The Journal of the American Medical...Ch. 17 - Prob. 35E Ch. 17 - Prob. 36E Ch. 17 - Teen smoking A Vermont study published by the...Ch. 17 - Depression A study published in the Archives of...Ch. 17 - Birthweight The Journal of the American Medical...Ch. 17 - Politics and sex One month before the election, a...Ch. 17 - Prob. 41E Ch. 17 - Prob. 42E Ch. 17 - Pain Researchers comparing the effectiveness of...Ch. 17 - Gender gap Candidates for political office realize...Ch. 17 - Prob. 45E Ch. 17 - Prob. 46E Ch. 17 - Sensitive men In the same article from Exercise...Ch. 17 - Carbs Recently, the Gallup Poll asked 1005 U.S....Ch. 17 - Food preference GfK Roper Consulting gathers...Ch. 17 - Prob. 50E Ch. 17 - Hot dogs In the July 2007 issue, Consumer Reports...Ch. 17 - Prob. 52E Ch. 17 - Prob. 53E Ch. 17 - Prob. 54E Ch. 17 - Hot dogs, last one In Exercise 53, we saw a 90%...Ch. 17 - Third load of wash In Exercise 54, we saw a 98%...Ch. 17 - Prob. 57E Ch. 17 - Prob. 58E Ch. 17 - Prob. 59E Ch. 17 - Prob. 60E Ch. 17 - Commuting A man who moves to a new city sees that...Ch. 17 - Pulse rates A researcher wanted to see whether...Ch. 17 - Prob. 63E Ch. 17 - New construction The house sales we looked at in...Ch. 17 - Cereal sugar The data below show the sugar content...Ch. 17 - Prob. 66E Ch. 17 - Prob. 67E Ch. 17 - Prob. 68E Ch. 17 - Cholesterol and gender Are men or women at higher...Ch. 17 - Prob. 70E Ch. 17 - Home runs 2016 American League baseball teams play...Ch. 17 - Prob. 72E Ch. 17 - Prob. 73E Ch. 17 - Prob. 74E Ch. 17 - Prob. 75E Ch. 17 - Ad campaign You are a consultant to the marketing...Ch. 17 - Prob. 77E Ch. 17 - Thirsty? Researchers randomly assigned...Ch. 17 - Prob. 79E Ch. 17 - Prob. 80E Ch. 17 - Tees Does it matter what kind of tee a golfer...Ch. 17 - Golf again Given the test results on golf tees...Ch. 17 - Music and memory Is it a good idea to listen to...Ch. 17 - Rap Using the results of the experiment described...Ch. 17 - Prob. 87E Ch. 17 - Prob. 88E

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Recall the experiment comparing patients 4 weeks after surgery for carpal tunnel syndrome. The patients who had endoscopic surgery demonstrated a mean pinch strength of 9.1 kg compared to 7.6 kg for the open-incision patients. 10. The P-value of the test was less than 0.05. State a brief conclusion.

Solution Summary: The author concludes that there is evidence to support that the mean pinch strength of the patients who got endoscopic surgery and group open-incision surgery are different.

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Chapter 17 Solutions