Question about calhoun mills data set, chapter 11 problem 19.
i have completed the question. my homework then asks the following:
revise the model you developed in part a to enforce that each fabric's demand should be met with exactly one of the three options (dobby, regular, or subcontract). solve the model.
with this.
the first part of the question is on this website under textbook solutions. it is from the essentials of business analytics 2nd edition, chapter 11 problem 19p..

Jonah runs 3/5 miles on sunday and 7/10 mile on monday. he uses the model to find that he can ran a total of 1 mile . what mistake does jonah make

Pls the last one and it has to be like number 6

Consider the linear model for a two-stage nested design with b nested in a as given below. yijk=\small \mu + \small \taui + \small \betaj(i) + \small \varepsilon(ij)k , for i=1,; j= ; k=1, assumption: \small \varepsilon(ij)k ~ iid n (0, \small \sigma2) ; \small \taui ~ iid n(0, \small \sigmat2 ); \tiny \sum_{j=1}^{b} \small \betaj(i) =0; \small \varepsilon(ij)k and \small \taui are independent. using only the given information, derive the least square estimator of \small \betaj(i) using the appropriate constraints (sum to zero constraints) and derive e(msb(a) ).