Ihree admis Program A B C 520 450 600 400 520 630 490 530 440 490 490 640 400 570 = 470 590 O Ho: Median 380 610 550 580 programs are bein 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: Median Median * Median H₁: Median = Mediang = Medianc Ho: All populations of test scores are identical. H₂: Not all populations of test scores are identical. Median = Medianc H₂: Median > Median < Median evaluated. Suppose the scores obtained by a sample of 20 people who used the programs Ho: Not all populations of test scores are identical. H₂: All populations of test scores are identical. Ho: Median Median = Median H₁: 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 the

MATLAB: An Introduction with Applications
6th Edition
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Author:Amos Gilat
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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.
A
Program
B
520 450 600
с
400 520 630
490
490 400 570
640
530 440 490
470 590
380 610
550 580
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 Median Median
H₂: Median = Median = Medianc
O
Ho: All populations of test scores are identical.
H₂: Not all populations of test scores are identical.
O Ho: Median = Mediang = Medianc
H₂: Median > Median < Median
O Ho: Not all populations of test scores are identical.
H₂: All populations of test scores are identical.
O Ho: MedianA = Median = Medianc
H₂: 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 =
State your conclusion.
Do not reject Ho. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
● 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 not 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 Program B 520 450 600 с 400 520 630 490 490 400 570 640 530 440 490 470 590 380 610 550 580 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 Median Median H₂: Median = Median = Medianc O Ho: All populations of test scores are identical. H₂: Not all populations of test scores are identical. O Ho: Median = Mediang = Medianc H₂: Median > Median < Median O Ho: Not all populations of test scores are identical. H₂: All populations of test scores are identical. O Ho: MedianA = Median = Medianc H₂: 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 = State your conclusion. Do not reject Ho. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs. ● 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 not 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.
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