The data set agsrs.dat also contains information on other variables. For each of the following quantities, plot the data, and estimate the population mean for that variable along with a 95% CI.
a. Number of acres devoted to farms in 1987
b. Number of farms, 1992
c. Number of farms with 1000 acres or more, 1992
d. Number of farms with 9 acres or fewer, 1992