3. A study was done to see whether or not there is a significant relationship between the blood pressures of children and those of their fathers. Blood pressures for both the fathers and children distributions. are categorized as belonging to either the low, middle or upper third of their respective Child's blood pressure Upper Total Lower third Middle third third Lower third 14 11 8 33 Father's blood Middle third | 11 11 9 31 pressure Upper third 6 10 12 28 Total 31 32 29 92 Test at 1% level of significance whether or not the blood pressures of children can be considered to be independent of the blood pressures of their fathers