Revised Hypothesis for the Mammography Study 3 points possible [graded) Remember that the role of a test statistic ?' is to differentiate between 10 and 174, based on the observations. Furthermore, the distribution of ?' needs to be known under the null hypothesis 17p. Recall the modified hypotheses above for the mammography study: . Null hypothesis MYp: Wasarmond = Wamind Alternative hypothesis 4 : #treatment