Three admission test preparation programs are being evaluated. Suppose the scores obtained by a sample of 20 people who use the programs provided the following data. Program A B C 540 450 600 400 540 610 490 400 580 510 420 490 490 480 590 620 360 630 550 560 Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Us ՈՈՒ

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
100%
Three admission test preparation programs are being evaluated. Suppose the scores obtained by a sample of 20 people who used
the programs provided the following data.
A
540
Program
B
с
450 600
400 540 610
620
490 400 580
510 420 490
490 480 590
360 630
550 560
Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Use
α = 0.05.
State the null and alternative hypotheses.
O Ho: Not all populations of test scores are identical.
H₂: All populations of test scores are identical.
O Ho: All populations of test scores are identical.
H: Not all populations of test scores are identical.
O Ho: Median + Median + Median
H₂: Median = Median = Median
O Ho: MedianA = Median = Median
H₂: Median Median Median
#
O Ho: Median = Median = Median
H₂: Median > Median < Medianc
Find the value of the test statistic. (Round your answer to two decimal places.)
9.06
X
Find the p-value. (Round your answer to three decimal places.)
p-value = 0.011
State your conclusion.
O Reject Ho. There is not sufficient evidence to conclude that there is a significant difference among the three test
preparation programs.
Do not reject Ho. There is sufficient evidence to conclude that there is a significant difference among the three test
preparation programs.
O Reject Ho. There is sufficient evidence to conclude that there is a significant difference among the three test preparation
programs.
O Do not reject Ho. There is not sufficient evidence to conclude that there is a significant difference among the three test
preparation programs.
Transcribed Image Text:Three admission test preparation programs are being evaluated. Suppose the scores obtained by a sample of 20 people who used the programs provided the following data. A 540 Program B с 450 600 400 540 610 620 490 400 580 510 420 490 490 480 590 360 630 550 560 Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Use α = 0.05. State the null and alternative hypotheses. O Ho: Not all populations of test scores are identical. H₂: All populations of test scores are identical. O Ho: All populations of test scores are identical. H: Not all populations of test scores are identical. O Ho: Median + Median + Median H₂: Median = Median = Median O Ho: MedianA = Median = Median H₂: Median Median Median # O Ho: Median = Median = Median H₂: Median > Median < Medianc Find the value of the test statistic. (Round your answer to two decimal places.) 9.06 X Find the p-value. (Round your answer to three decimal places.) p-value = 0.011 State your conclusion. O Reject Ho. There is not sufficient evidence to conclude that there is a significant difference among the three test preparation programs. Do not reject Ho. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs. O Reject Ho. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs. O Do not reject Ho. There is not sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 1 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
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 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…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
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
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman