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A researcher wanted to know if individuals have better reaction times depending on when the test is taken -- in the morning or in the afternoon. He randomly assigned 16 participants to take the same reaction time test in either the morning or the afternoon. The following results were obtained, where lower scores indicate faster reaction time. Assume that the parametric test assumptions ARE violated. Conduct an appropriate statistical test using an alpha of .05 and the eight steps of hypothesis testing.

A researcher wanted to know if individuals have better reaction times depending on when the test is taken -- in the morning or in the afternoon. He randomly assigned 16 participants to take the same reaction time test in either the morning or the afternoon. The following results were obtained, where lower scores indicate faster reaction time. Assume that the parametric test assumptions ARE violated. Conduct an appropriate statistical test using an alpha of .05 and the eight steps of hypothesis testing.

MATLAB: An Introduction with Applications
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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A researcher wanted to know if individuals have better reaction times depending on when the test is taken -- in the morning or in the afternoon. He randomly assigned 16 participants to take the same reaction time test in either the morning or the afternoon. The following results were obtained, where lower scores indicate faster reaction time. Assume that the parametric test assumptions ARE violated. Conduct an appropriate statistical test using an alpha of .05 and the eight steps of hypothesis testing. 

Note: more information given in table than is needed

5. A researcher wanted to know if individuals have better reaction times depending on when the test is taken -- in the morning or in the afternoon. He randomly assigned 16 participants to take the same reaction time test in either the morning or the afternoon. The following results were obtained, where lower scores indicate faster reaction time. Assume that the parametric test assumptions ARE violated. Conduct an appropriate statistical test using an alpha of .05 and the eight steps of hypothesis testing. Note: more information given in table than is needed Individual Morning Afternoon (X1) R1 X12 Individual R2 X22 Ranks D2 (X2) 1 79 6241 9 91 8281 -12 144 88 7744 10 92 8464 -4 16 95 9025 11 87 7569 8 64 4 78 6084 12 87 7569 81 81 6561 13 94 8836 -13 169 83 6889 14 86 7396 7 80 6400 15 82 6724 2 4 84 7056 16 93 8649 |-9 81 Total 668 56000 712 63488 -44 568 Means 83.5 89 -5.5 2.
Transcribed Image Text:5. A researcher wanted to know if individuals have better reaction times depending on when the test is taken -- in the morning or in the afternoon. He randomly assigned 16 participants to take the same reaction time test in either the morning or the afternoon. The following results were obtained, where lower scores indicate faster reaction time. Assume that the parametric test assumptions ARE violated. Conduct an appropriate statistical test using an alpha of .05 and the eight steps of hypothesis testing. Note: more information given in table than is needed Individual Morning Afternoon (X1) R1 X12 Individual R2 X22 Ranks D2 (X2) 1 79 6241 9 91 8281 -12 144 88 7744 10 92 8464 -4 16 95 9025 11 87 7569 8 64 4 78 6084 12 87 7569 81 81 6561 13 94 8836 -13 169 83 6889 14 86 7396 7 80 6400 15 82 6724 2 4 84 7056 16 93 8649 |-9 81 Total 668 56000 712 63488 -44 568 Means 83.5 89 -5.5 2.
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