. There are approximately 371 active telephone area codes covering Canada, the United States, and some Caribbean areas. More are created regularly.) You want to choose an SRS of 25 of these area codes for a study of available telephone numbers. How would you label the area codes to use Table 7.1? (a) (b) Use Table 7.1 (p. 246), starting at line 125, to choose the first three members of this sampe