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6.6,6.7 a-d , 6.8a , 6.9

+. Se.6 Samples four pieces of predision-cut wire (to be used in cemputer astembly) every hour for the past 24 bours has pooducod the following reralts: Devalop appropriate cootrol charts and determine whether thete is any cause for copcern is the cutung procesi. Flot the informs: Don and look for pattems PX are producat in a forging process ahd the ditimeter is a cntical facter that must be cootrolted From sampls sizes of lo pistons prodweed sikh day, the mean ind ihe range of tas dismeter bine thenseficllown b) Whatitilievidue of k ? 1. P PX 56.8 deviation in the weight of a bowling ball produced at the factory is known to be 0.12 pounds. Each day for 24 days, the average weight, in pounds, of nine of the bowling balle produced that day hae heen assessed as follows: a) Establish a control chart for moaitoring the average weights of the bowling balls in which the upper and lower costrol limits are each two standard deviations from the mean. What are the valucs of the costrot limits? b) If three standard devations are uss in the chant, how do these values change? Why? PX .. 56.9 Organie Grans LLC uses statistial process control loites hove the proper weght Based on a previouthy statle and