In a study of memory recall, 8 students from a large psychology class were selected at random and given 10 minutes to memorize a list of 20 nonsensical 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 the accompanying table.Student123456781 hour later16132091111171524 hours later114157871211Use these data to estimate the difference in mean number of words remembered after 1 hour and after 24 hours. Use a 90% confidence interval. (Use ?d = ?1 hour later − ?24 hours later. Use a table or technology. Round your answers to two decimal places.) , words

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a study of memory recall, 8 students from a large psychology class were selected at random and given 10 minutes to memorize a list of 20 nonsensical 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 the accompanying table.

Student	1	2	3	4	5	6	7	8
1 hour later	16	13	20	9	11	11	17	15
24 hours later	11	4	15	7	8	7	12	11

Use these data to estimate the difference in mean number of words remembered after 1 hour and after 24 hours. Use a 90% confidence interval. (Use

?_d = ?_{1 hour later} − ?_{24 hours later}.

Use a table or technology. Round your answers to two decimal places.)

words

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