$1.$Use New Drug data $($Hint: Please copy and paste the data on worksheet New Drug and create a text file or CSV file. Then, import$/$read the data from the file into R$.)$a$.$ Use R to create a histogram for Age.b$.$ Use R to show the mean, median, mode, standard deviation, min, and max for Before$\_$exp$\_$BP and After$\_$exp$\_$BP$,$ respectively.c$.$ Use R to create a Box$-$Plot for Before$\_$exp$\_$BP and After$\_$exp$\_$BP$,$ respectively.d$.$ Use R to create a stem$-$and$-$leaf for Age. Which one do you like, histogram or stem$-$and$-$leaf? Please do the following $2$ problems about data visualization. For each plot, you need to add a title for your work: Your LastName Figure X$.$ The scripts sample: labs$($title $=$ "Your LastName Figure X$")$ can be added for this purpose$\mathrm{.}2.$Please use the built$-$in dataset SAT in the package MosaicData. Plot a scatterplot for the variables salary and sat. Your plot should be the same as the plot below. The main features: purple points, red line, and Y$-$axis with $$.$ Use the title like Your LastName Figure $1$ for your plot. $3.$Please use the built$-$in dataset CPS$85$ in the package MosaicData. Plot a bar chart for the variable sector. Your plot should be the same as the plot below. The main features: purple bars, horizontal bars ranked from the highest $\%$ to the lowest $\%.$ Use the title like Your LastName Figure $2$ for your plot.