The table below shows distances between planets (center to center). Approximate Distance Between Planets
From
Το
Distance (km)
Mercury Saturn
1.37 x 109
Venus
Jupiter
6.7 x 108
Earth Neptune
4.35 x 109
Saturn Jupiter
3.46 x 108
Earth Mars
7.83 x 107
According to the table, which of the following planets are closest to each other?
Earth and Mars
B Saturn and Jupiter
C Mercury and Saturn
D Venus and Jupiter

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) ).