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. Program в с A 520 450 600 400 520 | 610 460 400 | 580 510 430 460 460| 480 560 630 390 640 550 590 Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Use a = 0.05. State the null and alternative hypotheses. O Ho: Median, = Mediang = Medianc H3: Median, > Median, < Medianc %3D O Ho: Mediana # Median, + Medianc H3: Median, = Mediang = Medianc O Ho: Not all populations of test scores are identical. Ha: 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, = Mediang = Medianc Ha: Median, + Mediang + Medianc Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value =
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. Program в с A 520 450 600 400 520 | 610 460 400 | 580 510 430 460 460| 480 560 630 390 640 550 590 Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Use a = 0.05. State the null and alternative hypotheses. O Ho: Median, = Mediang = Medianc H3: Median, > Median, < Medianc %3D O Ho: Mediana # Median, + Medianc H3: Median, = Mediang = Medianc O Ho: Not all populations of test scores are identical. Ha: 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, = Mediang = Medianc Ha: Median, + Mediang + Medianc Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value =
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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.
Program
A
B
C
520
450
600
400
520
610
460
400
580
510
430
460
460
480
560
630
390
640
550
590
Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Use a = 0.05.
State the null and alternative hypotheses.
Ho: Mediana
Median, = Medianc
%3D
%3D
H: Median, > Median, < Medianc
Ho: Mediana + Median, + Medianc
H: Mediana
Mediang
Medianc
%3D
: Not all populations of test scores are identical.
Ho:
H: All populations of test scores are identical.
Ho:
: All populations of test scores are identical.
H: Not all populations of test scores are identical.
Ho: Mediana
Median, = Medianc
H: Median, + Median, + Medianc
Find the value of the test statistic. (Round your answer to two decimal places.)
Find the p-value. (Round your answer to three decimal places.)
p-value
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