Let X1, ..., Xn be a random sample from N(0, 1). We want to test Ho : 1 < 0 < 2 against H1 : 0 <1 or 0 > 2. Obtain an expression for the power of the test.

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Q: Let X1,..., Xn be a random sample from N(0,1). We want to test Ho : Hị : 0 2.

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Q: For the random variables X,Y Cov(X,Y) = -0.9 if Z=3-X then what is Cov(Z,Y)=???

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