A baking supplies distributor monitors its flour packaging process using mean and range charts. Samples of 75 randomly selected bags are periodically removed from the process and the weight of each bag is measured (in ounces). Summary statistics for the past ten samples are provided in the table below: 2. 3 6 Sample # Mean Range 1 31.9 5.9 31.9 6.0 28.9 31.5 5.9 5 33.2 5.9 ul 7 32.2 7.8 33.0 5.8 8 32.2 7.8 9 33.0 1.9 5.9 10 33.0 2.0 Standard Deviation of the Process: 2.07 Standard Deviation of Ranges: 2.02 For which of the following values of z (the number of standard deviations) would the process be considered in control? 15 2.0 25 30 Nons of the above