A study was conducted to determine if softly playing Mozart in the background enhanced retention while studying dates of historical significance. The data from the study is summarized below.
No Mozart n = 20; x = 63.8; s = 4.4
Mozart n = 20; x = 64.2; s = 3.5
Assume the populations are normal with unequal variances. Construct a 99% confidence interval for the difference in means (No Mozart - Mozart).© BrainMass Inc. brainmass.com June 3, 2020, 7:07 pm ad1c9bdddf
The solution compares data on test scores between samples that have or have not listened to Mozart in the background. The comparison calculates a confidence interval based on the assumption of unequal variances.