19 Aug According to the text, a two-tailed test should be useda.unless there is a compelling a priori reason not to.b.if you are sure that the difference between yo
QUESTION 1 According to the text, a two-tailed test should be useda.unless there is a compelling a priori reason not to.b.if you are sure that the difference between your means is sufficiently large to ensure statistical significance.c.when you are interested...