Question

Control A speaker manufacturer molds kevlar woofer surro surrounds are randomly sampled each five minutes, measured, and the average and range for each unds for use in 6.5 woofers. Samples of 7 woofer sample is computed. The following data represent the summary statistics for the most recent 14 Sample Mean 6.49* 6.47 6.49 6.51 6.50 6.46 6.47 6.52 6.51 6.48 6.49 6.50 6.52 6.46 Range 0.05. 0.03 0.07 0.02 0.06 0.08 0.03 0.04 0.07 0.03 0.05 0.03* 0.04 2 6 10 12 13 14 0.03 Panay 4 1. What is the CL for the R-chart? 14 2. What is the UCL for the R-chart? 3. What is the LCL for the R-chart? 4. What is the CL for the x-chart? 5. What is the UCL for the R-chart? 6. What is the LCL for the s-chart? Why or why not? Does this process appear to be in statistical control? 7.

Answer 1

Solution:
Page CL Fo R chant σ . 0865 UCL For R chart 3 LCL For R chast -6-49-to·0182 6.4712 7Here oe observed thal Fom R-chast al Samplu range values are within But Fo x- chart he mean Nolue r he samples f are out of Conhml dha 3and 3 Henee the procesj doey not apr