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.  For each store, compute the difference  =  traffic with program minus traffic without program.  At alpha = 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 alternativce that the mean difference >0 (the program increases traffic).   Customer Traffic   With Program Without Program   136 140   228 233   111 110   38 42   332 332   132 135   150 151   35 33   189 178   141 147   175 162   253 243   144 149   49 48   356 346

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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.  For each store, compute the difference  =  traffic with program minus traffic without program.  At alpha = 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 alternativce that the mean difference >0 (the program increases traffic).
  Customer Traffic
  With Program Without Program
  136 140
  228 233
  111 110
  38 42
  332 332
  132 135
  150 151
  35 33
  189 178
  141 147
  175 162
  253 243
  144 149
  49 48
  356 346

 

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