Given the sample data. x: 21, 19, 15, 30, 27 (a) Find the range. (Enter an exact number.) (b) Verify that Ex = 112 and Ex2 = 2,656. (For each answer, enter an exact number,) EX = EX2 = (c) Use the results of part (b) and appropriate computation formulas to compute the sample variance s and sample standard deviation s. (For each answer, enter a number. Round your answers to two decimal places.) $2 = S = (d) Use the defining formulas to compute the sample variance s and sample standard deviation s. (For each answer, enter a number. Round your answers to two decimal places.) 52 = S = (e) Suppose the given data comprise the entire population of all x values. Compute the population variance ofand population standard deviation o. (For each answer, enter a number. Round your answers to two decimal places.) 62 - Need Help? Read It