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 BC 530 450 600 400 530 610 470 400 560 510 440 470 470 460 570 640 380 620 550 580 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 H: All populations of test scores are identical. H: Not all populations of test scores are identical. O Ho: Median, = Mediang = Mediane #,: Median, > Median, < Median. O Hg: Not all populations of test scores are identical. H: All populations of test scores are identical. O Ho: Median, Mediang = Medianc H,: Median, = Mediang = Mediane e Ho: Median, - Mediang = Mediane H: Median, + Mediang + Median. Find the value of the test statistic. (Round your answer to two decimal places.) 8 05 Find the p-value. (Round your answer to three decimal places.) p-value - 018 State your conclusion. O Do not reject Hg. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs. O Reject H9. There is not sufficient evidence to conclude that there is a significant difference among the three test preparation programs. Do not reject Hg. There is not sufficient evidence to conclude that there is a significant difference among the three test preparation programs. O Reject H,. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
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 BC 530 450 600 400 530 610 470 400 560 510 440 470 470 460 570 640 380 620 550 580 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 H: All populations of test scores are identical. H: Not all populations of test scores are identical. O Ho: Median, = Mediang = Mediane #,: Median, > Median, < Median. O Hg: Not all populations of test scores are identical. H: All populations of test scores are identical. O Ho: Median, Mediang = Medianc H,: Median, = Mediang = Mediane e Ho: Median, - Mediang = Mediane H: Median, + Mediang + Median. Find the value of the test statistic. (Round your answer to two decimal places.) 8 05 Find the p-value. (Round your answer to three decimal places.) p-value - 018 State your conclusion. O Do not reject Hg. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs. O Reject H9. There is not sufficient evidence to conclude that there is a significant difference among the three test preparation programs. Do not reject Hg. There is not sufficient evidence to conclude that there is a significant difference among the three test preparation programs. O Reject H,. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
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 BC
530 450
600
400 530
470
400 560
510
440
470
470 460
570
640
380
620
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 H: All populations of test scores are identical.
H: Not all populations of test scores are identical.
O Ho: Median, = Median, = Median,
H: Median, > Median, < Median.
O H: Not all populations of test scores are identical.
H: All populations of test scores are identical.
O Ho: Median, + Mediang + Medianc
H: Median, = Median, = Median,
O Ho: Median, = Median, = Medianc
H: Median, + Median, + Median,
Find the value of the test statistic. (Round your answer to two decimal places.)
8.05
Find the p-value. (Round your answer to three decimal places.)
p-value =.018
State your conclusion.
O Do not reject H. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
O Reject Hg. There is not 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.
O Reject H,. There is sufficient evidence to conclude that there is a significant difference among the three test preparation programs.
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