The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To study and control the manufacturing process, 20 samples, each containing three radial tires, were chosen from different shifts over several dawn nf nmnontinn with thn fallowing results. Tread wear measurements are in hundredths of an inch. Assuming that these data were collected when the manufacturing process was believed to be operating in control, develop the R chart. Compute the upper and lower control limits for the R chart. (Round your answers to two decimal places.) UCL= Compute the upper and lower control limits for the R chart. (Round your answers to two decimal places.) UCL= IrI - the x chart. Compute the upper and lower control limits for the x chart. (Round your answers to two decimal places.) UCL= LCL= Construct the x chart. Sample Number (i) Sample Number (i) Sample Number (i) Sample Number (i)