I am asked to determine if a test procedure is unbiased. I have the power function and all of that, but I can't figure out what I need to do to determine if the test is unbiased or not. I am guessing I need to find the expected value of the power function or something, but what is that supposed to equal if the test is unbiased?? Also when determining the size of a test, is it better to have a lower or higher size. I am comparing two procedures. I am kinda lost, any help would be greatly appreciated. Thanks!