An inspector obtained a random sample of 50 blank CDs from the Zoji Memory Supply Company. The inspector found the CDs in the sample to have a mean thickness of 0.925 mm, with a sample standard deviation of 0.058 mm. Assuming that the population of thicknesses is normally distributed, construct a 98% confidence interval for the mean thickness of all the CDs from the Zoji Memory Supply Company. Round your answers to four decimal places. Answer: We are 98% confident that the mean thickness of all CDs from Zoji lies between mm and mm.