Part I: True or False (80 points) (1) H, (or H.) is commonly used to represent the alternative hypothesis. (2) The hypothesis test to see
Part I: True or False (80 points) (1) H, (or H.) is commonly used to represent the alternative hypothesis. (2) The hypothesis test to see if a mean has changed is Ho : u = Ho VS. H,: M 5 is a two-tailed hypothesis test. (4) Reject H. if Z is in the shaded region. This is a right-tailed test. 2 Z (5) a = Pr(rejecting Ho when Ho is true) (6) For fixed a , increasing n will increase B (7) The critical value for a two-tailed z-test at the 5% significance level is 1.96 . (8) The critical value for a right-tailed t-test given 7 degrees of freedom and a =.05 is 2.365
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