1.A medical researcher suspects that a new birth control pill affects blood pressure given its chemical makeup.The researcher randomly selects 10 women and gives them the new birth control pill for a month.The diastolic blood pressure of the ten women on the birth control pill are presented below:
108, 76, 69, 78, 74, 85, 79, 78, 80, 81
Does the new birth control pill affect blood pressure (m = 75)?Conduct a hypothesis test with alpha = .05.
2.A researcher knows that the mean number of symptoms (e.g., fatigue, sleep disturbance, feelings of worthlessness, etc.) exhibited by the population of people with unipolar depression, prior to diagnosis, is 9.5.She suspects that being told that you suffer from unipolar depression increases that number.She randomly selects 14 individuals already with the diagnosis of unipolar depression and counts the number of symptoms they exhibit.The number of depressive symptoms exhibited by the 14 participants was:
8, 9, 15, 19, 2, 8, 16, 14, 12, 13, 4, 15, 9, 10
Does her hypothesis carry any weight at the .05 level?