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CHAPTER 19 1. A production process is set up to fill containers with 16 ounces of...

CHAPTER 19
1. A production process is set up to fill containers with 16 ounces of liquid. The standard deviation σ is
known to be 0.5 ounces. The quality control department periodically selects samples of 25 containers and
measures the contents. (Assume the distribution of filling volumes is normal.)
a. Determine the upper and lower control limits.
b. Explain the meaning of the values you found in part a.
2. The upper and lower control limits of the proportions of defectives of a process are 0.33 and 0.27.
a. What has been the proportion of defectives in this process?
b. What has been the sample size?

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