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The systolic blood pressures of 10 patients taking a novel antidepressant and 10 patients taking a placebo are shown below. All 20 are males between the ages of 20 and 29 and were recruited randomly from eligible volunteers. Placebo Antidepressant 115 121 115 114 122 126 118 126 121 120 113 128 124 121 119 128 116 116 116 117 Mean: 117.9 121.7 Variance: 12.54 26.01 Does the drug have an effect on blood pressure? Conduct the best possible statistical hypothesis test. State a) the null and alternate hypotheses (1 mark) b) type of test you will conduct and whether it will be one- or two-tailed (1 mark) c) whether homogeneity of variance is a requirement for your test; if so, test it before continuing. Use an alternative test if appropriate (do not attempt a data transformation). (1 mark)