Answered: The test-retest method is one way of…

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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The test-retest method is one way of establishing the reliability of a test. The test is administered, and then, at a later date, the same test is re-administered to the same individuals. The correlation coefficient is computed between the two sets of scores. The following test scores were obtained in a test-retest situation. (Round your answers to two decimal places.)

First Score	75	87	60	75	98	80	68	84	47	72
Second Score	73	89	53	74	93	79	71	79	54	71

The answer I got for this is typed in, but it is wrong.

(b) Set a 95% confidence interval for ?.

lower limit	.76 wrong answer
upper limit	1.16 wrong answer

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