A researcher thinks that listening to classical music reduces anxiety. She measures the anxiety of 10...

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A researcher thinks that listening to classical music reduces anxiety. She measures the anxiety of 10 persons then plays Mozart's "Eine Kleine Nachtmusik" (listen here if you want--you know the tune!) for them. Following that the researcher measures their anxiety again. (Note that anxiety is measured on a scale from 1 to 7, with higher numbers indicating increased anxiety.) Does the study support her hypothesis? Compute the upper bound of the confidence interval using the following data: mean of the difference scores (subtract pretest from posttest): -1.0 standard error of the difference scores: 0.6 The formula for the Cl upper bound is [standard error of the difference scores]*[t critical value]+[mean of the difference scores] A researcher thinks that listening to classical music reduces anxiety. She measures the anxiety of 10 persons then plays Mozart's "Eine Kleine Nachtmusik" (listen here if you want--you know the tune!) for them. Following that the researcher measures their anxiety again. (Note that anxiety is measured on a scale from 1 to 7, with higher numbers indicating increased anxiety.) Does the study support her hypothesis? Compute the upper bound of the confidence interval using the following data: mean of the difference scores (subtract pretest from posttest): -1.0 standard error of the difference scores: 0.6 The formula for the Cl upper bound is [standard error of the difference scores]*[t critical value]+[mean of the difference scores]

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Yes the study supports the researcher s hypothesis that listening to c... View the full answer