2. A medico researcher wants to determine whether on experimental birth control pil has the side effect of changing blood pressure. He conducts on experiment by randomly selecting ten women. Five of them are given placebo for a month then he measures their diastolic blood pressure. After which he switches them to the birth control pill for a month and again measures their blood pressure. The some procedure done to the other five women except that they are first given the birth control pill for a month, followed by the placebo olgo for o month. The blood pressure reading ore presented in the following table: Diastolic Blood Pressure subject Birth Control City of Union 80 85 78 31 108 102 79 79 84 84 79 76 78 77 70 68 6 6 10 76 3. A teacher of English of a certain high school wants to determine the writing competence of her students. She takes a group of 20 fourth year students for her