The following questions use a modified $($individualized$)$ form of the data from Question $2$ in Chapter $5$ of KKNR $($see Blackboard for the data set, called $$ex$0502\_$XXX$.$dat$$ where XXX is your Individual Data Set Number from the Blackboard Grade Center$).$ The variables in this dataset are, in order: person, sbp$,$ quet, age, smk$.$ Write a single SAS program called $$HW$1\_$B$.$sas$$ that performs the following tasks: