Design specification for the concrete slabs in Problem 4 is

Design specification for the concrete slabs in Problem 4 is between 78 and 81 kg. a. Based on the data given in Problem 4, is the specification being met? b. Estimate the process standard deviation from the average range in Problem 4 using formula 10-4. Then, calculate the Cp. Is the process capable? Compare with your answer to part α.