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). How would you 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