Prima Company produces different types of flour. The flour is sold and shipped to the retailers in cartons. Management of the company plans to monitor the time to pack a carton.

The upper specification limit is 55 minutes and lower specification limit is 25 minutes. Based on three observations from six samples, the following information was recorded

What are the values of the overall mean (X̅), range (R̅) and standard deviation (σ) for this data set? Assume d₂=1.693.
Based on the values you have derived, obtain the values of Cp, Cpu, Cpl, and Cpk.
Outline whether this process is in control.
 

Transcribed Image Text:

Sample No. 1 2 3 4 5 6 Average (min) 36 35 31 35 32 28 Max (min) 42 40 38 43 44 38 Min (min) 30 26 19 28 22 20 Sample No. 1 2 3 4 5 6 Average (min) 36 35 31 35 32 28 Max (min) 42 40 38 43 44 38 Min (min) 30 26 19 28 22 20

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What are the values of the overall mean X range R and standard deviation for this data set Assume d ... View the full answer