An industrial psychologist consulting with Lara music stores knows that the average number of complaints management receives each month throughout the industry is 5, but the standard deviation is unknown. Fifteen of the Lara music stores were randomly selected to record complaints for one month; the mean of this sample was 3 and its standard deviation was 2.5. Using the .05 significance level, is the number of complaints received by Lara music stores different from the number of complaints received by music stores in general