Hi, So I really need help trying to understand how to estimate the model parameters in question 4.19 BY HAND! I can find the solutions everywhere its the process I need to know how to do for the final. How do you find each and every model parameter it is asking for in 4.19? PLEASE HELP! I will rate :)

4.7 A chemist wishes to test the effect of four chemical agents on the strength of a particular type of cloth. Because there might be variability from one bolt to another, the chemist decided to use a randomized block design, with the bolts of cloth considered as blocks. She selects five bolts and applies all four chemicals in random order to each bolt. The resulting tensile strength follow. Analyze the data from this experiment (use o = 0.05) and draw appropriate conclusion. Bolt Chemical 1 2 4 5 73 68 74 71 73 67 75 72 70 75 68 78 73 68 73 71 75 75 69 4.19 Assuming that chemical types and bolts are fixed, estimate the model parameters T and B; in Problem 4.7