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Chapter 6 Problems

# Chapter 6 Problems - 7 A production manager at a Contour...

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Chapter 6 Problems 2. A quality control inspector at the Beautiful Shampoo Company has taken three samples with four observations each of the volume of shampoo bottles filled. The data collected by the inspector and the computed means are shown here: Samples of Shampoo Bottle Volume in Ounces Observation 1 2 3 1 19.7 19.7 1.97 2 20.6 20.2 18.7 3 18.9 18.9 21.6 4 20.8 20.7 20.0 Mean 20.0 19.875 20.0 If the standard deviation of the shampoo bottle-filling operation is 0.2 ounces, use the information in the table to develop control limits of 3 standard deviations for the operation.

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Unformatted text preview: 7. A production manager at a Contour Manufacturing plant has inspected the number of defective plastic molds in 5 random samples of 20 observations each. Following are the number of defective molds found in each sample: Sample Number of Defects Number of Observations in Sample 1 1 20 2 2 20 3 2 20 4 1 20 5 20 Total 6 100 Construct a 3-sigma control chart (z = 3) with this information....
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Chapter 6 Problems - 7 A production manager at a Contour...

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