Legalization of marijuana, Part I. The 2010 General Social Survey asked 1,578 US res- idents: \Do you think the use of marijuana should be made legal, or not?" 61% of the respondents said it should be made legal.44 (a) Is 61% a sample statistic or a population parameter? Explain. (b) Construct a 95% condence interval for the proportion of US residents who think marijuana should be made legal, and interpret it in the context of the data. (c) A critic points out that this 95% condence interval is only accurate if the statistic follows a normal distribution, or if the normal model is a good approximation. Is this true for these data? Explain.(d) A news piece on this survey's ndings states, \Majority of Americans think marijuana should be legalized." Based on your condence interval, is this news piece's statement justied?