A supervisor has determined the expected processing times at a machine for a set of jobs and now wants to sequence them. Given the following information, do the following:

Job Job Time $($days$)$ Due Date $($days$)$

a $4\mathrm{.}510$

b $6\mathrm{.}017$

c $5\mathrm{.}212$

d $1\mathrm{.}627$

e $2\mathrm{.}818$

f $3\mathrm{.}319$

a$-1.$ Determine the processing sequence using $(1)$ MST$,(2)$ SPT$,(3)$ EDD, and $(4)$ CR$.$