(6) (5 points) Suppose you want to test the following hypotheses: Ho : M = 50 vs. Ha : u > 50, using an observed sample statistic of a = 54 and a standard error of SE = 1.3. Calculate the standardized test statistic. 3 (7) (5 points) Which normal distribution N(M, ) most closely models a bell-shaped bootstrap distribution with standard error SE = 0.07, if the population parameter of interest is /1 - /2 = 0.236 and the original sample statistic is $1 - T2 = 0.091? (8) (5 points) Which normal distribution N(u, ) most closely models a bell-shaped randomization dis- tribution with standard error SE = 2.98, if the null parameter is / = 415, the observed sample statistic is T = 421, and the standard deviation of the observed sample is s = 11.2