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Module 4 Assignment 1 Auto pistons at Kevin's plant in Pueblo are produced in a forging process, and the diameter is a critical factor that must be controlled. Frem sample size of 7 pistons produced each day, the mean and the range of this diameter have been as follows: Day Mean (MM) 1 1669 22 163.2 3 163.6 4 165.5 5 166.6 around your answers to three decimal places. Range (MM) 5.2. 5.6 5.1 6.0 5.5 a) What is the value of X-double bar (mean of sample means)? b) What is the value of Raverage range)? c) What are the UCL and LCL ofx-bar chart: UCIE LCL d) What are the UCL and LCL Of R chart UCLE LOL 2. An Ad agency tracks the complaints by week received, about the billboards in its city No. of Complaints 4 Week 1 2. 3. 5 4 11 13 5 a) What type of control charts would you use to monitor this process? b) What are the controllimit 13-sigmay for this process? e is the pretess in control according to the control limits? Why or why not? 3. In the past, the defective rate of for the assembly line has been 3.5%. What are the upper and lever control limits 13 sigma) if you wish to use a s sample size of 400 a) What type of control charts would you use to monitor this process bi What are the controllimits (3-sigimaj for this process? 4. True False) Attr bute charts monitor weights or dimensions. Variable charts are more ona Ves-no" gauge and tend to be less costly to implement