STAT 245 Lecture Notes - Lecture 45: Null Hypothesis, Test Statistic, Ahis
Document Summary
9. 10 a if the airline is to determine whether or not the flight is unprofitable, they are interested in finding out whether or not. 60 (since a flight is profitable if is at least. Since only small values of x (and hence, negative values of z) would tend to disprove. H0 in favor of ha, this is a one-tailed test. c for this exercise, n. Test of mu = 0. 6 vs < 0. 6. N mean stdev se mean bound t p. Since the p-value of 0. 024 is small (<0. 05) we can reject the null hypothesis and conclude the alternative that this flight is unprofitable. 05 is determined by a critical value of z such that. 1. 645 and h0 will be rejected if z . 1. 645 (compare the right-tailed rejection region in exercise 9. 6). The observed value of z falls in the rejection region and h0 is rejected. ------------------------------- end------ and the test statistic is z x.
