A study was made of a sample of 25 records of patients seen over the past year at an outpatient clinic within a chronic disease hospital. For this sample, the mean number of outpatient visits per patient during the year was 4.8, and the standard deviation was 2. Can it be concluded from these data that the population mean is greater than 4 visits per patient per year? Assume that the probability of making a type I error is 0.05. (with explanation)