Testing a claim about americans’ views on the u. s. healthcare system in 2008, 73% of adults in the u. s. believed the u. s. healthcare system was in a state of crisis or had major problems. nine years later in 2017, after the implementation of numerous national and statewide attempts to improve healthcare opportunities for people throughout the country, a gallup survey reported that 1 72% of u. s. adults have this same negative view about the u. s. healthcare system. the gallup survey is based on a random sample of 1,028 u. s. adults. does this sample provide conclusive evidence that the proportion of u. s. adults in 2017 who held this view is lower than it was in 2008?