STATS:DATA+MODELS-W/DVD
4th Edition
ISBN: 9780321986498
Author: DeVeaux
Publisher: PEARSON
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Chapter 8, Problem 5E
To determine
Explain about the thinking of the person who went awry.
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I just need to know why this is wrong below:
What is the test statistic W? W=5 (incorrect)
and
What is the p-value of this test? (p-value < 0.001-- incorrect)
Use the Wilcoxon signed rank test to test the hypothesis that the median number of pages in the statistics books in the library from which the sample was taken is 400. A sample of 12 statistics books have the following numbers of pages
pages
127
217
486
132
397
297
396
327
292
256
358
272
What is the sum of the negative ranks (W-)? 75 What is the sum of the positive ranks (W+)? 5What type of test is this? two tailedWhat is the test statistic W? 5 These are the critical values for a 1-tailed Wilcoxon Signed Rank test for n=12
Alpha Level
0.001
0.005
0.01
0.025
0.05
0.1
0.2
Critical Value
75
70
68
64
60
56
50
What is the p-value for this test? p-value < 0.001
Chapter 8 Solutions
STATS:DATA+MODELS-W/DVD
Ch. 8.3 - Prob. 1JCCh. 8.3 - Prob. 2JCCh. 8.3 - Prob. 3JCCh. 8 - Prob. 1ECh. 8 - 2. Revenue and talent cost A concert production...Ch. 8 - Prob. 3ECh. 8 - 4. Revenue and ticket sales The concert production...Ch. 8 - Prob. 5ECh. 8 - 6. Stopping times Using data from 20 compact cars,...Ch. 8 - Prob. 7E
Ch. 8 - Prob. 8ECh. 8 - Prob. 9ECh. 8 - Prob. 10ECh. 8 - Prob. 11ECh. 8 - Prob. 12ECh. 8 - Prob. 13ECh. 8 - Prob. 14ECh. 8 - Marriage age 2011 Is there evidence that the age...Ch. 8 - Prob. 16ECh. 8 - Prob. 17ECh. 8 - Prob. 18ECh. 8 - 26. Bad model? A student who has created a linear...Ch. 8 - Prob. 20ECh. 8 - Prob. 21ECh. 8 - Prob. 22ECh. 8 - Oakland passengers 2013 The scatterplot below...Ch. 8 - Prob. 24ECh. 8 - 32. More unusual points Each of the following...Ch. 8 - Prob. 26ECh. 8 - Prob. 27ECh. 8 - Prob. 28ECh. 8 - 36. What’s the effect? A researcher studying...Ch. 8 - Prob. 30ECh. 8 - Prob. 31ECh. 8 - Prob. 32ECh. 8 - 40. Speed How does the speed at which you drive...Ch. 8 - Speed How does the speed at which you drive affect...Ch. 8 - Prob. 35ECh. 8 - Prob. 36ECh. 8 - Prob. 37ECh. 8 - Prob. 38ECh. 8 - Prob. 39ECh. 8 - Prob. 40ECh. 8 - Prob. 41ECh. 8 - Prob. 42ECh. 8 - Prob. 43ECh. 8 - Prob. 44ECh. 8 - Prob. 45ECh. 8 - Prob. 46ECh. 8 - Prob. 47ECh. 8 - Prob. 48E
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