Apolling organization found in 2011 that 48% of people in a large country are concerned about global warming, down from 51% in 2008. results for this poll were based on telephone interviews conducted in 2011, with a random sample of 1238 adults, aged 18 and older, living in the country. does the sample from 2011 give evidence that concerns for global warming have decreased since 2008? complete parts a through e below. a) write appropriate hypotheses. let p be the proportion of people in the country who are concerned about global warming. upper h 0: p equals 0.51. upper h subscript upper a: p less than 0.51. (type integers or decimals. do not round.) b) check the assumptions and conditions. the independence assumption is satisfied. the randomization condition is satisfied. the 10% condition is satisfied. the success/failure condition is satisfied. c) perform the test and find the p-value. what is the test statistic?