The Fast N' Hot food chain wants to test if their "Buy One, Get One Free" program increases customer traffic enough to support the cost of the program. For each of 15 stores, one day is selected at random to record customer traffic with the program in effect, and one day is selected at random to record customer traffic with program not in effect. The results of the experiment are documented in DATA. For each store, compute difference = traffic with program minus traffic without program. At = 0.05, test the hypothesis that the mean difference is at most 0 (at best the program makes no difference, or worse it decreases traffic) against the alternative that the mean difference > 0 (the program increases traffic). HINT: Is this paired data (dependent on the unit of observation), or data from independent populations?

Customer Traffic
With Program	Without Program
134	140
246	233
116	110
42	42
335	332
145	135
164	151
31	33
183	178
149	147
176	162
257	243
155	149
61	48
343	346