2. Blood pressure is independent of the blood group. We want toknow, if the distributions attending to the blood group, in threereferred samples attending to the type of blood pressure, they aredistributed in the same way. To this end, a sample of 1500 subjectswas collected and their blood group was determined and bloodpressure was taken, classifying it as low, normal, and high.Obtaining the following results:
Blood pressure | Blood Grpoup |
A | B | AB | O | Total |
Low | 28 | 9 | 7 | 31 | 75 |
Normal | 543 | 211 | 90 | 476 | 1320 |
High | 44 | 22 | 8 | 31 | 105 |
Total | 615 | 242 | 105 | 538 | 1500 |
Use alfa at 0.05
