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2. A teacher wants to test three different teaching methods: I, Il and II. To do this, he formed three groups of 5 students and to each group he applied a different teaching method. All students took the same exam. The results (out of 100) are grouped in the table. At the 5% risk level, is there a significant difference between the three methods? method I 75 62 71 58 73 method II 81 85 68 92 90 method III 73 79 60 75 81

2. A teacher wants to test three different teaching methods: I, Il and II. To do this, he formed three groups of 5 students and to each group he applied a different teaching method. All students took the same exam. The results (out of 100) are grouped in the table. At the 5% risk level, is there a significant difference between the three methods? method I 75 62 71 58 73 method II 81 85 68 92 90 method III 73 79 60 75 81

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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2. A teacher wants to test three different teaching methods: I, Il and II. To do this, he formed three groups of 5 students and to each group he applied a different teaching method. All students took the same exam. The results (out of 100) are grouped in the table. At the 5% risk level, is there a significant difference between the three methods? method I 75 method II 71 73 92 90 62 58 81 85 68 method III 73 79 60 75 81
Transcribed Image Text:2. A teacher wants to test three different teaching methods: I, Il and II. To do this, he formed three groups of 5 students and to each group he applied a different teaching method. All students took the same exam. The results (out of 100) are grouped in the table. At the 5% risk level, is there a significant difference between the three methods? method I 75 method II 71 73 92 90 62 58 81 85 68 method III 73 79 60 75 81
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