MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A researcher is examining whether daily exercise influences mood. The researcher
assigns n = 27 individuals to exercise for three months and finds an average mood
score of M = 23 with SS = 182 in this group. A second group of n = 23 individuals
assigned to a control group attains an average mood score of M = 24 with SS = 90.
Which of the following is most consistent with the test statistic obtained by a two-
tailed independent-measures t test with α = .01?
O t = -1.48 and fail to reject the null hypothesis
t = -2.68 and reject the null hypothesis
Ot= -2.68 and fail to reject the null hypothesis
t = -1.48 and reject the null hypothesis
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Transcribed Image Text:A researcher is examining whether daily exercise influences mood. The researcher assigns n = 27 individuals to exercise for three months and finds an average mood score of M = 23 with SS = 182 in this group. A second group of n = 23 individuals assigned to a control group attains an average mood score of M = 24 with SS = 90. Which of the following is most consistent with the test statistic obtained by a two- tailed independent-measures t test with α = .01? O t = -1.48 and fail to reject the null hypothesis t = -2.68 and reject the null hypothesis Ot= -2.68 and fail to reject the null hypothesis t = -1.48 and reject the null hypothesis
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