( ) Hotelling 12- Multivariate Problem: The data shown in Table from a production process with two CTOs, X1, and X2. The sample data are sample means of X1 and X2 (Sample size-25, Assume that mean values of the quality characteristics and the covariance matrix were computed from 50 preliminary Samples 50) Construct 12 control chart using these data for Phase II 55 200 1309 Xdbar S S-1 302 130 120 Total no. of CTQ (p)? Sample Size(n)? Subgroup (m)? Alpha=0.001 Falpha,p.mn-m-p+1)... Sample No. 2 3 4 5 6 7 8 9 10 11 12 13 14 15 xbari 58 50 54 63 53 42 55 46 50 49 57 58 75 55 xbar2 32 33 27 31 38 30 20 31 25 29 27 30 33 45 27 1 60 matrix calc t2 = n* calc UCL = LCL: 00C