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he teacher from Problem 21 also tried a different ap- roach to determining whether changing answers helps r hurts exam grades. In another class, students were old to review their final exams and change any answers they wanted to before turning them in. However, the students had to indicate both the original answer and the changed answer for each question. The teacher graded cach exam twice, once using the set of original answers and once with the changes. In the class of n = 22 stu- dents, the exam scores improved by an average 0l Mp = 2.5 points with the changed answers. The standard D. deviation for tho dif

he teacher from Problem 21 also tried a different ap- roach to determining whether changing answers helps r hurts exam grades. In another class, students were old to review their final exams and change any answers they wanted to before turning them in. However, the students had to indicate both the original answer and the changed answer for each question. The teacher graded cach exam twice, once using the set of original answers and once with the changes. In the class of n = 22 stu- dents, the exam scores improved by an average 0l Mp = 2.5 points with the changed answers. The standard D. deviation for tho dif

MATLAB: An Introduction with Applications
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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tailed test at the .01 level of significon =D2.5 points with the changed answers. The standard deviation for the difference scores was s = 3.1. Are the Matched Pair No-Change Section Change Section 71 86 #1 68 80 # 2 88 91 #3 65 74 # 4 73 82 #5 81 89 # 6 85 85 #7 86 88 # 8 65 76 #9 The teacher from Problem 21 also tried a different ap- proach to determining whether changing answers helps or hurts exam grades. In another class, students were told to review their final exams and change any answers they wanted to before turning them in. However, the students had to indicate both the original answer and the changed answer for each question. The teacher graded cach exam twice, once using the set of original answers and once with the changes. In the class of n = dents, the exam scores improved by an average Of MD 22 stu- ation for the difference scores was s = 3.1. Are the ala sufficient to conclude that rethinking and changing wers can significantly improve scores? Use a olle- %3D 23 וויו ןייויויייו ןויויייויוייויויויויי CA 92251-0937 37 IRRIGATION DISTRICT
Transcribed Image Text:tailed test at the .01 level of significon =D2.5 points with the changed answers. The standard deviation for the difference scores was s = 3.1. Are the Matched Pair No-Change Section Change Section 71 86 #1 68 80 # 2 88 91 #3 65 74 # 4 73 82 #5 81 89 # 6 85 85 #7 86 88 # 8 65 76 #9 The teacher from Problem 21 also tried a different ap- proach to determining whether changing answers helps or hurts exam grades. In another class, students were told to review their final exams and change any answers they wanted to before turning them in. However, the students had to indicate both the original answer and the changed answer for each question. The teacher graded cach exam twice, once using the set of original answers and once with the changes. In the class of n = dents, the exam scores improved by an average Of MD 22 stu- ation for the difference scores was s = 3.1. Are the ala sufficient to conclude that rethinking and changing wers can significantly improve scores? Use a olle- %3D 23 וויו ןייויויייו ןויויייויוייויויויויי CA 92251-0937 37 IRRIGATION DISTRICT
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