According to estimates from the federal government's 2003 National Health Interview Survey, based on face-to-face interviews in 16,677 households, about 58.2% of U.S. adults have both a landline and a mobile phone, 2.8% have only a mobile phone service, but no landline, and 1.6% have no telephone service at all.
a. Make a Venn diagram to help visualize the following probabilities:
b. What proportion of U.S. households can be reached by a landline call?
c. Are having a mobile phone and having a landline independent events? Explain