Mathematics, 24.12.2019 20:31 zoeedadoll
To test the effect of classical music on the brain, a study has been done. twenty 6th grade students are randomly divided into two groups of 10 students and the same math test was given to these students. the first group of students listened to classical music for 20 minutes right before taking the test and the other group of students took the test without listening to it. here are their scores. assume equal variance for answering the following questions. group with music: 91 77 58 89 83 78 74 81 91 88 group without music: 81 65 69 69 67 61 67 87 64 81 construct a 95% confidence interval of the mean difference. test if the students who listened to classical music before the test scored higher than the other group of students using alpha = 0.05. conduct the same test as in part (b) using alpha = 0.01.
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To test the effect of classical music on the brain, a study has been done. twenty 6th grade students...
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