Question: Suppose that the Mis are unequal and Model M1 holds. The budget allows you to take a total of L measurements on subunits. Show that

Suppose that the Mi€™s are unequal and Model M1 holds. The budget allows you to take a total of L measurements on subunits. Show that the variance in (5.36) is minimized for á¹ªr when mi is proportional to Mi. Use Lagrange multipliers, with the constraint

es mi-L.

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