2. Does owning an indoor dog really help bring down borderline high systolic blood pressure? To answer this question, a random sample of twelve subjects with chronically borderline high sys- tolic blood pressure was obtained. Their systolic blood pressure was recorded. They then received a house-trained dog to live indoor with them. After one month, their blood pressure was taken again. At the 2.5% significance level, can you conclude that owning a pet will reduce the average systolic blood pressure? Blood 139.9 130.4 131.3 130.8 128.9 129.5 130.8 129.3 128.1 133.4 125.2 123.9 Pressure Before Blood 136.3 127.4 125.6 131.2 127.5 126.9 130.1 125.7 130.4 134.8 125.6 121.9 Presure After

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