Using the following categories and the Decision Tree Data table in the Exercises section of the "decision tree chapter" (picture below), discretize salary and age variables and solve problems 5 and 6 in the chapter. Show only the first split.

Salary Categories

Less than $35,000 = Level 1
$35,000 to less than $45,000 = Level 2
$45,000 to less than $55,000 = Level 3
Above $55,000 = Level 4

Age Categories

Less than or equal to 30 = Category 1
Greater than 30 but less than or equal to 40 = Category 2
Above 40 = Category 3 5. Construct a classification and regression tree to classify salary based on the other variables. Do as much as you can by hand, before turning to the software. 6. Construct a C4.5 decision tree to classify salary based on the other variables. Do as much as you can by hand, before turning to the software.