Tricia open a bank account. she deposit 74. 50 dollars into her account every month for 10 months. she uses $32.50 every month to pay for painting class. after 10 months, she use one over two of the total money left in her account to go to summer camp for painting. what is the total amount of money spent to go summer camp?

a 210.00
b 325.00
c 420.00
d 840.00

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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) ).