In: Statistics and Probability
When the background music tempo was slow, the mean amount of bar purchases for a sample of 17 restaurant patrons was $30.52 with a standard deviation of $15.20. When the background music tempo was fast, the mean amount of bar purchases for a sample of 12 patrons in the same restaurant was $21.71 with a standard deviation of $9.10. Assuming equal variances, at α = 0.10, is the true mean higher when the music is slow?