5. Students who enroll in a certain memory course are given a pre-test before the course begins. At the completion of the course, 6 students are randomly selected and given a post-test. Their scores are listed below: Student 1 2 3 4 5 6 Before 93 86 72 54 92 65 After 98 92 80 62 91 75 (a) Construct a 95% confidence interval for the mean difference in the test scores. (b) Based on the confidence interval in (a), can we conclude that there is significant improve- ment in memory for the students who enroll in the memory course? Why?
5. Students who enroll in a certain memory course are given a pre-test before the course begins. At the completion of the course, 6 students are randomly selected and given a post-test. Their scores are listed below: Student 1 2 3 4 5 6 Before 93 86 72 54 92 65 After 98 92 80 62 91 75 (a) Construct a 95% confidence interval for the mean difference in the test scores. (b) Based on the confidence interval in (a), can we conclude that there is significant improve- ment in memory for the students who enroll in the memory course? Why?
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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Can someone please help me to solve the following question showing all work.
Transcribed Image Text:5.
Students who enroll in a certain memory course are given a pre-test
before the course begins. At the completion of the course, 6 students are randomly selected and
given a post-test. Their scores are listed below:
Student 1 2 3
5
6
Before 93
86
72 54
92
65
After 98 92 80 62 91 75
(a) Construct a 95% confidence interval for the mean difference in the test scores.
(b) Based on the confidence interval in (a), can we conclude that there is significant improve-
ment in memory for the students who enroll in the memory course? Why?
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