Question 7.41

11. There are approximately 371 active three-digit telephone area codes covering Canada, the United States, and some Caribbean areas (more are created regularly).

330

You want to choose an SRS of 25 of these area codes for a study of available telephone numbers.

  1. How would you label the area codes to use Table 7.1?
  2. Use Table 7.1 (page 298), starting at line 125, to choose the first three labels of the members of this sample.

11.

(a) 001 to 371

(b) Area codes labeled 214, 235, 119