The number of cell phones per 100 residents in countries in Europe is given in table #9.3.9 for the year 2010.The number of cell phones per 100 residents in countries of the Americas is given in table #9.3.10 also for the year 2010 ("Population reference bureau," 2013).Find the 98% confidence interval for the different in mean number of cell phones per 100 residents in Europe and the Americas.

Table 1193.9: Number of Cell Phones per 100 Residents in Europe 100 76 100 130 75 84 112 84 138 133 118 134 123 95 51" 51" 118 125 110 115 140 115 141 7'? 98 102 102 112 118 118 54 23 121 126 47 Table #9310: Number of Cell Phones er 100 Residents '11 the Americas 158 117 106 159 53 50 78 56 88 92 42 3 150 72 86 113 50 58 70 109 31' 32 85 101 75 69 55 115 95 73 85 157 100 119 81 113 8'? 1 05 95