Business, 17.04.2020 16:18 hannahbannana98

The specification for a plastic handle calls for a length of 6.0 inches ± 0.1 inches. The standard deviation of the process is estimated to be 0.02 inches. What are the upper and lower specification limits for this product? The process is known to operate at a mean thickness of 6.03 inches.

a) Can the company meet the customer’s specification requirements at this time? If it cannot, explain if it is due to a drifting of the mean or too much variability.

b) Suppose that the mean of the process has now shifted to 5.95 inches. What is the maximum standard deviation (σ) of this process if the company wants to ensure that it can maintain a Cpk of 2.0?

c) The specification limits have not changed. Suppose that the mean of the process has now shifted to 5.9 inches with a standard deviation (σ) of 0.09. What is the range (upper and lower limits) on the mean of the process to maintain a Cpk of 2.0 or greater?

d) Suppose that the mean of the process is operating at a mean of 6.1 inches and a standard deviation of 0.1 inches and follows a normal probability distribution. The lower spec (specification) limit is 5.95 and the upper spec limit is 6.2. What percent of the values are outside of the spec limits?

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The specification for a plastic handle calls for a length of 6.0 inches ± 0.1 inches. The standard d...

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