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 #9.3.9: Number of Cell Phones per 100 Residents in Europe

100 76 100 130 75 84

112 84 138 133 118 134

126 188 129 93 64 128

124 122 109 121 127 152

96 63 99 95 151 147

123 95 67 67 118 125

110 115 140 115 141 77

98 102 102 112 118 118

54 23 121 126 47

Table #9.3.10: Number of Cell Phones per 100 Residents in the Americas

158 117 106 159 53 50

78 66 88 92 42 3

150 72 86 113 50 58

70 109 37 32 85 101

75 69 55 115 95 73

86 157 100 119 81 113

87 105 96