Calculate a value of r that will result in actual capability

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Reference no: EM132340441

Case Questions

Using data provided in worksheet labeled First Shift, setup the appropriate control chart / charts for the bagging process for the first shift.

Using data provided in worksheet labeled Second Shift, setup the appropriate control chart / charts for the bagging process for the first shift.
Setup the appropriate chart / charts for the proportion of bags that weigh less that 40lbs based on the control chart information for Shift 1.

Six sigma projects usually express defect rates on a DPMO scale – defects per million opportunities – how many bags will be defective (i.e. weigh less than 40lbs) on a DPMO basis?

From a quality perspective, the bags should weigh no less than 40 lbs. For the first shift process, what value of the upper specification limit (USL) would result in a Cp of at least 1.0?

Is the upper specification limit determined in the previous question economically sound (assume HH Industries advertises bags to contain 40lbs of cement)? Why?

Using 40lbs as a target value, what is the actual capability index (Cpk) for the bagging process for the first shift (Note: With only one specification, you can only determine a one-sided specification)?

The supervisor wants to improve the bagging process for the first shift such that the actual capability index is at least 1.0. Given the current first shift process, how would the bagging process variability (measured by average range, R-bar) need to change for the actual capability (calculated in the previous question) to reach a value of at least 1.0 (in other words, please calculate a value of R that will result in an actual capability of 1.0)?

Attachment:- Mean-Range Sample.rar

Reference no: EM132340441

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