Based on the previous question: A scientist predicts engineers are more creative than physicians. On a standard creativity test, the population mean for physicians is 40.5. For a sample of 25 engineers, the sample mean = 42.1 (sample variance = 15.52) using the same test. a. What is the value of tcrit? b. What is the value of tobt? c. With p = 0.05, do we accept or reject the null hypothesis? 13