The data in Table 7E.15 represent the number of nonconformities per 1,000 meters in telephone cable. From analysis of these data, would you conclude that the process is in statistical control? What control procedure would you recommend for future production?

Utilize a c chart based on # of nonconformities per 1,000 meters.

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.TABLE 7E.15 Telephone Cable Data for Exercise 7.53 Sample Number of Sample Number NonconformitiesNumber Nonconformities Number of 12 13 14 15 16 17 18 19 20 21 15 6 10 13 10 19 24 20