The General Social Survey has asked respondents, “Do you think the use of marijuana should be made legal or not?” Go to the GSS Web site, sda.berkeley.edu/GSS. For the 2008 survey with variable GRASS:
a. Of the respondents, how many said “legal” and how many said “not legal”? Report the sample proportions.
b. Is there enough evidence to conclude whether a majority or a minority of the population support legalization? Explain your reasoning.
c. Now look at the data on this variable for all years by entering YEAR as the column variable. Describe any trend you see over time in the proportion favoring legalization.