A study was conducted to determine whether big-city and small-town dwellers differed in their helpfulness to strangers. In this study, the investigators rang the doorbells of strangers living in New York City or small towns in the vicinity. They explained they had misplaced the address of a friend living in the neighborhood and asked to use the phone. The following data show the number of individuals who admitted or did not admit the strangers (the investigators) into their homes:

Helpfulness to Strangers
Admitted strangers into their home Did not admit strangers into their home

Big-city dweller 55 85 140
Small-town dweller 73 41 114
128 126 254

Required:
Do big-city dwellers differ in their helpfulness to strangers? Use α = 0.05 in making your decision.