Telemarketing

Telemarketers continue to attempt to reach consumers by calling landline phone numbers. According to estimates from a national 2003 survey,based on face-to-face interviews in 16,677 households, approximately 58.2% of U.S. adults have both a landline in their residence and a cell phone, 2.8% have only cell phone service but no land line, and 1.6% have no telephone service at all.

a) Polling agencies won't phone cell phone numbers be- cause customers object to paying for such calls. What pro- portion of U.S. households can be reached by a landline call?

b) Are having a cell phone and having a landline indepen- dent? Explain.