A professor wants to see how much students learn over the course of a semester. A pre-test is given before the class begins to see what students know ahead of time, and the same test is given at the end of the semester to see what students know at the end. The data are below. Test for an improvement at the a = .05 level. Did scores increase? How much did scores increase? Pre-test Post-test XD 90 89 60 66 95 99 93 91 95 100 67 64 89 91 90 95 94 95 83 89 75 82 87 92 82 83 82 85 88 93 66 69 90 90 93 100 86 95 91 96
A professor wants to see how much students learn over the course of a semester. A pre-test is given before the class begins to see what students know ahead of time, and the same test is given at the end of the semester to see what students know at the end. The data are below. Test for an improvement at the a = .05 level. Did scores increase? How much did scores increase? Pre-test Post-test XD 90 89 60 66 95 99 93 91 95 100 67 64 89 91 90 95 94 95 83 89 75 82 87 92 82 83 82 85 88 93 66 69 90 90 93 100 86 95 91 96
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 24PFA
Related questions
Question
A professor wants to see how much students learn over the course of a semester. A pre-test is given before the class begins to see what students know ahead of time, and the same test is given at the end of the semester to see what students know at the end. The data are below. Test for an improvement at the a = .05 level. Did scores increase? How much did scores increase?
|
Pre-test |
Post-test |
XD |
|
90 |
89 |
|
|
60 |
66 |
|
|
95 |
99 |
|
|
93 |
91 |
|
|
95 |
100 |
|
|
67 |
64 |
|
|
89 |
91 |
|
|
90 |
95 |
|
|
94 |
95 |
|
|
83 |
89 |
|
|
75 |
82 |
|
|
87 |
92 |
|
|
82 |
83 |
|
|
82 |
85 |
|
|
88 |
93 |
|
|
66 |
69 |
|
|
90 |
90 |
|
|
93 |
100 |
|
|
86 |
95 |
|
|
91 |
96 |
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