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.
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.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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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
520
450
600
400
520 610
490
400
560
510
430
490
490
460
590
630 370 640
550 570
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 H,: Not all populations of test scores are identical.
H: All populations of test scores are identical.
O H: All populations of test scores are identical.
H: Not all populations of test scores are identical.
O Ho: Median, = Mediang = Medianc
H: Median, * Mediang * Median.
O Hg: Median, + Mediang + Median,
H: Median, = Mediang = Median.
O Ho: Median, = 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 =
State your conclusion.
O Reject H.. There is not sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
O Reject Hg. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
O Do not reject H,- There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
O Do not reject H,. There is not sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
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