A study was conducted to determine whether bigcityI and smalltown dwellers differed in their helpfulness to strangers. In this study, the investigators rang the doorbelis of strangers living in New York City or small towns in the vicinity. They explained theyr 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 Did not admit strangers into strangers into their home their home B'g'c'ty 58 91 149 dweller Smallitown 68 30 98 dweller 126 121 247 Do big-city dwellers differ in :heir helpfulness to strangers? Use a : 0.05 in making your decision. xznm = |:| xzmt = |:|