Zane is a dangerous fellow who likes to go rock climbing in active volcanoes. One time, when he was 20 meters
below the edge of a volcano, he heard some rumbling, so
he decided to climb up out of there as quickly as he could.
He managed to climb up 4 meters each second and get
out of the volcano safely.
Graph the relationship between Zane's elevation relative
to the edge of the volcano (in meters) and time (in
seconds)

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) ).