3.) How long does it take to commute from home to work? It depends on several factors, including route, traffic, and time of departure. The data below are results (in minutes) from a random sample of eight trips. 29 38 30 42 24 35 33 39 a.) What are the sample mean Xand the sample standard deviation 3? (3 points each) Hint: Enter the data set in the calculator or use the formulas in Chapter 2 to find the sample mean and SAMPLE STANDARD DEVIATION b.) Use these data to create a 98% condence interval for the population mean time of the commute. (12 points)