Jonas needs at least $27 to buy some school supplies. He already has $21. Which graph best represents all the possible dollar amounts that Jonas can save to buy the school supplies? Number line graph with closed circle on 6 and shading to the right.
Number line graph with open circle on 6 and shading to the right.
Number line graph with open circles on 0 and 6 and shading in between.
Number line graph with closed circles on 0 and 6 and shading in between.

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) ).