Answer Happy

Estimate the variance components. Show all steps and include any output from R if used. Many thanks.
2. The factors that influence the breaking strength of a synthetic fiber are being studied. Four production machines and three operators are chosen and a factorial experiment is run using fiber from the same production batch. The results are as follows: Operator 1 109 110 Machine 2 3 110 108 115 109 1 4 110 108 2 110 112 110 111 111 109 114 112 3 116 114 112 115 114 119 120 117