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Nine students took a standardized test. Their scores are listed below. Later on, they took a test preparation course and retook the test. Their new scores are listed below. Use the Wilcoxon signed-ranks test to find the test statistic T to test the hypothesis that the test preparation had no effect on their scores. Use α = 0.05. Student 1 2 3 4 6 7 8 9 5 940 1,030 1,160 990 1,070 830 Before Score 970 1,100 890 After Score 1,170 1,100 790 1,390 1,240 1,130 1,060 1,470 1,030 OA. 2 O B. 32 OC. 41 OD. 4

Nine students took a standardized test. Their scores are listed below. Later on, they took a test preparation course and retook the test. Their new scores are listed below. Use the Wilcoxon signed-ranks test to find the test statistic T to test the hypothesis that the test preparation had no effect on their scores. Use α = 0.05. Student 1 2 3 4 6 7 8 9 5 940 1,030 1,160 990 1,070 830 Before Score 970 1,100 890 After Score 1,170 1,100 790 1,390 1,240 1,130 1,060 1,470 1,030 OA. 2 O B. 32 OC. 41 OD. 4

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Nine students took a standardized test. Their scores are listed below. Later on, they took a test preparation course and retook the test. Their new scores are listed below. Use the Wilcoxon signed-ranks test to find the test statistic T to test the hypothesis that the test preparation had no effect on their scores. Use a = 0.05. Student 1 2 3 4 5 6 7 990 Before Score 970 1,100 890 940 1,030 1,160 After Score 1,170 1,100 790 1,390 1,240 1,130 1,060 OA. 2 OB. 32 OC. 41 OD. 4 8 9 1,070 830 1,470 1,030
Transcribed Image Text:Nine students took a standardized test. Their scores are listed below. Later on, they took a test preparation course and retook the test. Their new scores are listed below. Use the Wilcoxon signed-ranks test to find the test statistic T to test the hypothesis that the test preparation had no effect on their scores. Use a = 0.05. Student 1 2 3 4 5 6 7 990 Before Score 970 1,100 890 940 1,030 1,160 After Score 1,170 1,100 790 1,390 1,240 1,130 1,060 OA. 2 OB. 32 OC. 41 OD. 4 8 9 1,070 830 1,470 1,030
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