By hand, test the null hypothesis of independence between residence size and ease of obtaining marijuana (?=.01). If appropriate, compute and interpret a suitable measure of association.

Residence Size Obtain Marijuana Small Town Medium City Large City Total Probably impossible 9 10 5 24 Very difficult 3 6 10 19 Fairly difficult 24 16 11 51 Fairly easy 88 35 34 157 Very easy 183 114 93 390 Total 307 181 153 64