It came as a big surprise when Apple's touch screen iPhone 4, considered by many to be the best smartphone ever, was found to have a problem (The New York Times, June 24, 2010).

Users complained of weak reception, and sometimes even dropped calls, when they cradled the phone in their hands in a particular way. A quick survey at a local store found that 2%

of iPhone 4 users experienced this reception problem.

a. Describe the relevant population.

b. Does 2% denote the population parameter or the sample statistic? P-7