c. One can be 9570 Commuo limit. D. a and b 2. The following data were collected in a clinical trial evaluating a new compound designed to improve wound healing in trauma patients. The new compound is compared against a placeb0. After treatment for 5 days with the new compound or placebo the extent of wound healing is measured and the data are shown below. Percent Wound Healing Treatment New Compound (n-125) Placebo (n-125) 0-25% 15 36 26.50% | 51-75% | 76-100% 32 37 45 34 Is there a difference in the extent of wound healing by treatment? Hint: Are treatment and the percent wound healing independent?) Run the appropriate test at a 5% level ofsignificance. df- alpha 5 2 17 ) Reject Ho ifX2 Compute expected frequencies Expected Frequency (Row Total * Column Total)/N. Complete the expected frequencies for each cell. Percent Wound Healing Total 125 125 250 Treatment 0-25% | 26-50% 51-75% 32 76-100% 41 New Compound Placebo Total 15 36 51 37 45 82 34 10 Compute χ2. (27.2) 28.32 Based on comparing the computed χ2 to the rejection level χ2 which of the following is (are) true? We have statistically significant evidence at alpha-0.05 to show that Ho is false. A. B. Treatment and percent wound healing are not independent. C. Treatment and percent wound healing are independent. D. a and b. Page 2 of 3
c. One can be 9570 Commuo limit. D. a and b 2. The following data were collected in a clinical trial evaluating a new compound designed to improve wound healing in trauma patients. The new compound is compared against a placeb0. After treatment for 5 days with the new compound or placebo the extent of wound healing is measured and the data are shown below. Percent Wound Healing Treatment New Compound (n-125) Placebo (n-125) 0-25% 15 36 26.50% | 51-75% | 76-100% 32 37 45 34 Is there a difference in the extent of wound healing by treatment? Hint: Are treatment and the percent wound healing independent?) Run the appropriate test at a 5% level ofsignificance. df- alpha 5 2 17 ) Reject Ho ifX2 Compute expected frequencies Expected Frequency (Row Total * Column Total)/N. Complete the expected frequencies for each cell. Percent Wound Healing Total 125 125 250 Treatment 0-25% | 26-50% 51-75% 32 76-100% 41 New Compound Placebo Total 15 36 51 37 45 82 34 10 Compute χ2. (27.2) 28.32 Based on comparing the computed χ2 to the rejection level χ2 which of the following is (are) true? We have statistically significant evidence at alpha-0.05 to show that Ho is false. A. B. Treatment and percent wound healing are not independent. C. Treatment and percent wound healing are independent. D. a and b. Page 2 of 3
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
Can you help me complete the bottom chart and compute X2 of my homework assignment? I know df is 125-1=124. Thank you.
Transcribed Image Text:c. One can be 9570 Commuo
limit.
D. a and b
2. The following data were collected in a clinical trial evaluating a new compound designed to
improve wound healing in trauma patients. The new compound is compared against a placeb0.
After treatment for 5 days with the new compound or placebo the extent of wound healing is
measured and the data are shown below.
Percent Wound Healing
Treatment
New Compound (n-125)
Placebo (n-125)
0-25%
15
36
26.50% | 51-75% | 76-100%
32
37
45
34
Is there a difference in the extent of wound healing by treatment? Hint: Are
treatment and the percent wound healing independent?) Run the appropriate test at a
5% level ofsignificance.
df-
alpha 5
2
17 ) Reject Ho ifX2
Compute expected frequencies
Expected Frequency (Row Total * Column Total)/N.
Complete the expected frequencies for each cell.
Percent Wound Healing
Total
125
125
250
Treatment
0-25% | 26-50%
51-75%
32
76-100%
41
New Compound
Placebo
Total
15
36
51
37
45
82
34
10
Compute χ2.
(27.2)
28.32
Based on comparing the computed χ2 to the rejection level χ2 which of the following
is (are) true?
We have statistically significant evidence at alpha-0.05 to show that Ho is false.
A.
B. Treatment and percent wound healing are not independent.
C. Treatment and percent wound healing are independent.
D. a and b.
Page 2 of 3
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 4 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman