Continuing the previous problem, the firm's shipping director has implemented a new quality control program within her department. She is interested in determining whether this program is reducing the mean error rate of the company's shipments. She also hopes that the quality control program will serve to reduce the variability in the proportion of book shipments not conforming to customer orders. To assess the efficacy of the new program, she obtains another set of sample data. The file P20_22.xlsx contains the number of reported nonconforming shipments out of the 75 shipments randomly selected on each of 25 consecutive days after the implementation of the quality control program. Based on these data, does the program appear to be meeting the shipping director's goals? Explain why or why not.