We are trying to ascertain in the proportion of people in the population with chronic back pain has changed as employment has shifted from more physical (construction, labor, manufacturing) to less physical in nature (service, office work, technology) over the years. In the US, 25% of the population reports having back pain in the past 12 months; this number has been constant for three decades. The General Social Survey, however, in 2002, reported 28% of people responding to the survey (n=1500) had chronic back pain in the last 12 months. Using the information above conduct a hypothesis test using an alpha level of 0.05.