Question: 1. (20 marks) A component part for a motorcycle is manufactured by an investment casting process. The air vent opening on this casting is an

1. (20 marks) A component part for a motorcycle is manufactured by an investment casting process. The air vent opening on this casting is an important functional parameter of the part. The results for five samples are given in the table. The values given have been coded ning the last two dists of the dimension Sample Air vent opening diameter (in mm) 61 63 60 1 58 2 61 55 58 62 66 60 59 55 53 57 58 64 69 61 65 63 X.COMWWW.OD ostv2.ob Time Lot 01:56:40 1. (20 marks) A component part for a motorcycle is manufactured by an investment casting process. The air ven opening on this casting an important functional parameter of the part. The results for five samples are given in the table. The values given have been coded wing the last two digits of the dimension Sample Air vent opening diameter (in mm) 58 61 63 1 60 2 61 S5 58 66 3 60 59 55 53 57 58 69 63 61 65 a. Determine the central line and control limits for the range and mean charts, plot the values b. Explain whether the samples indicate the presence of an assignable cause. c. The sample data for a subsequent weck had the values: 64.71, 62, and 56. What conclusion can be reached about the state of the process? What should management do

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