A++ rating solution with detailed and correct explanation | Control Chart Problem

A production manager at a Contour Manufacturing plant has inspected the number of defective plastic molds in five random samples of 30 observations each. Following are the number of defective molds found in each sample:

Sample

Number of Defects

Number of Observations in Sample

1

2

30

2

0

30

3

1

30

4

0

30

5

2

30

Total

5

150

Construct a 3-sigma control chart () with this information.
(Round your answers to 2 decimal places, the tolerance is +/-0.01)
CL =
UCL =
LCL

2) Ten samples with five observations each have been taken from the Beautiful Shampoo Company plant in order to test for volume dispersion in the shampoo bottle-filling process. The average sample range was found to be 0.32 ounces. Develop control limits for the sample range.

(Round your answers to 3 decimal places, the tolerance is +/-0.001)

CL =
UCL =
LCL =

Solution Contains, calculations + farmula’s used + Excel sheet + chart

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