n a study of memory recall, ten students from a large statistics and data analysis class were selected at random and given 15 minutes to memorize a list of 20 nonsense words. Each was asked to list as many of the words as he or she could remember both 1 hour and 24 hours later. The data are as shown in Table 1. Is there evidence to suggest the mean number of words recalled after 1 hour exceeds the mean recall after 24 hours by more than 3? Use a significance level of 0.05. students 1 2 3 4 5 6 7 8 9 10 1 hours later (words) 14 12 18 7 11 9 16 15 13 17 24 hours later(words) 10 4 14 5 8 5 11 12 9 10
n a study of memory recall, ten students from a large statistics and data analysis class were selected at random and given 15 minutes to memorize a list of 20 nonsense words. Each was asked to list as many of the words as he or she could remember both 1 hour and 24 hours later. The data are as shown in Table 1. Is there evidence to suggest the mean number of words recalled after 1 hour exceeds the mean recall after 24 hours by more than 3? Use a significance level of 0.05. students 1 2 3 4 5 6 7 8 9 10 1 hours later (words) 14 12 18 7 11 9 16 15 13 17 24 hours later(words) 10 4 14 5 8 5 11 12 9 10
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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In a study of memory recall, ten students from a large statistics and data analysis class were
selected at random and given 15 minutes to memorize a list of 20 nonsense words. Each was
asked to list as many of the words as he or she could remember both 1 hour and 24 hours later.
The data are as shown in Table 1. Is there evidence to suggest the mean number of words recalled
after 1 hour exceeds the mean recall after 24 hours by more than 3? Use a significance level of
0.05.
| students | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 hours later (words) | 14 | 12 | 18 | 7 | 11 | 9 | 16 | 15 | 13 | 17 |
| 24 hours later(words) | 10 | 4 | 14 | 5 | 8 | 5 | 11 | 12 | 9 | 10 |
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