Answered: Cognitive psychologists know that…

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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Question

Cognitive psychologists know that memory for the words in the middle of a list is poorer than memory for the words at the beginning or end of the list. Researchers wanted to see if people with different levels of education remember a different number of items in the middle of a list. They selected two groups of people with n=6 in each group. Group 1 has 12 years of formal education and Group 2 has 20 or more years of formal education. The table below shows the number of words each group remembered from the middle 10 words on the list.

Group 1 Group 2

4	5
7	7
2	3
4	8
3	6
6	3

a. Is there a significant difference in the number of words remembered from the middle of the list in the two groups? Use an α = .05.

b. Compute r² to measure effect size.

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