Exercise 7-47 Algo A manufacturing process produces steel rods in batches of 3,300. The firm believes that the percent of defective items generated by this process is 6.6%. a. Calculate the centerline, the upper control limit (UCL), and the lower control limit (LCL) for the p chart. (Round your answers to 3 decimal places.) Centerline Upper Control Limit Lower Control Limit b. An engineer inspects the next batch of 3,300 steel rods and finds that 7.8% are defective. Is the manufacturing process under control? O Yes, because the sample proportion lies within the control limits. Yes, because the sample proportion lies below the lower control limit. O No, because the sample proportion lies between the upper and lower control limits. O No, because the sample proportion lies below the lower control limit.

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Exercise 7-47 Algo
A manufacturing process produces steel rods in batches of 3,300. The firm believes that the percent of defective items generated by
this process is 6.6%.
a. Calculate the centerline, the upper control limit (UCL), and the lower control limit (LCL) for the p chart. (Round your answers to 3
decimal places.)
Centerline
Upper Control Limit
Lower Control Limit
b. An engineer inspects the next batch of 3,300 steel rods and finds that 7.8% are defective. Is the manufacturing process under
control?
O Yes, because the sample proportion lies within the control limits.
Yes, because the sample proportion lies below the lower control limit.
O No, because the sample proportion lies between the upper and lower control limits.
O No, because the sample proportion lies below the lower control limit.
Transcribed Image Text:Exercise 7-47 Algo A manufacturing process produces steel rods in batches of 3,300. The firm believes that the percent of defective items generated by this process is 6.6%. a. Calculate the centerline, the upper control limit (UCL), and the lower control limit (LCL) for the p chart. (Round your answers to 3 decimal places.) Centerline Upper Control Limit Lower Control Limit b. An engineer inspects the next batch of 3,300 steel rods and finds that 7.8% are defective. Is the manufacturing process under control? O Yes, because the sample proportion lies within the control limits. Yes, because the sample proportion lies below the lower control limit. O No, because the sample proportion lies between the upper and lower control limits. O No, because the sample proportion lies below the lower control limit.
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