In preparing a national promotional campaign to raise funds for operation feed the poor, the organizing charity examined previous records of donations to establish if age of donor is a factor in the monetary size of the donation received from a donor. Their records were arranged into the following contingency table: Size of donation Age group 20 - 34 35 - 49 50 - 64 Over 64 Above R100 25 40 40 40 R50 - R100 65 51 74 50 Under R50 36 39 19 30 Test at 5% level of significance, whether age group and size of donation are independent