In a january 2017 washington post-abc news poll, respondents were asked "there is a proposal to offer nearly 140 billion dollars in tax cuts for private companies if they pay to build new roads, bridges and transportation projects. the companies then could charge tolls for people to use these roads, bridges and transportation. do you support or oppose this proposal? " of the 1005 people polled, 66 percent of those surveyed said they oppose the above proposal. an objective of this study is to .a. test a claim about a population meanb. estimate a population meanc. test a claim about a population proportiond. estimate a population proportion