Then the number of spelling errors made by students in a five-page assignment after the program is shown. Before 8 3 10 5 9 11 12 7 After 6 4 8 2 4 7 10 7 At 5% significance level, did the program work? Note: 1.no need excel formula 2. No need hand writing

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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C. A ninth-grade teacher wishes to see if a new spelling program will reduce the spelling errors in his students’ writing. The number of spelling errors made by the students in a five-page assignment before the program is shown. Then the number of spelling errors made by students in a five-page assignment after the program is shown. Before 8 3 10 5 9 11 12 7 After 6 4 8 2 4 7 10 7 At 5% significance level, did the program work? Note: 1.no need excel formula 2. No need hand writing
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