Question: Assume that X, X2,... is a sequential sample from a N(0, 1) density, and that it is desired to test Ho: 0-0 versus H: 0-1.

Assume that X, X2,... is a sequential sample from a N(0, 1) density, and that it is desired to test Ho: 0-0 versus H: 0-1. The decision loss is L(80,

a) = L(0,

a) 0, L(0, a,)-1, and L(0,

a) -2. The cost of a fixed sample of size nis C(n) = n(0.1). If the prior probabilities of 0, and 8, are and }, respectively, approximate the optimal fixed sample size.

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