The document presents a case study where Lisa wants to open a beauty store and needs data to support her belief that women in her local area spend more than the national average of $59 every 3 months on fragrance products. Lisa takes a random sample of 25 women in her area and finds the sample mean is $68.10 with a standard deviation of $14.46. She conducts a one-sample t-test to test if the population mean is greater than $59. The test statistic is 3.1484 with a p-value of 0.0021, which is less than the significance level of 0.05. Therefore, there is sufficient evidence to conclude that the population mean is indeed greater than $