The number of cell phones per 100 residents in countries in Europe is given in table # 1 for the year 2010. The number of cell phones per 100 residents in countries of the Americas is given in table #2 for the year 2010.

Table 1 : 100 76 100 130 75 84 112 84 138 133 118 134 126 188 129 93 64 128 124 122 106 121 127 152 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 2 : 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

Is there enough evidence to show that the mean number of cell phones in countries of Europe is more than the countries of the Americas? Test the 1% level.

Let U1 = mean number of cell phones per 100 residents in countries of Europe. Let U2 = mean of cell phones per residents in countries if the Americas. Write a statement that correctly defines the null hypothesis Ho?

Write a statement that correctly defines the alternate hypothesis HA.

What is the level of significance x used for this test?

Determine the standard deviation, Degrees of freedom, test statistic