Import the ch$06\_$charges.tsv and ch$06\_$approved$\_$vendors.tsv data sets into your analysis software. These files give a list of purchases and vendors that arebapproved for use, reapectively.

$1.$ Are any vendors used that are jot approved bendors? If so$,$ list the vendor names and the emoloyees whobused these vendors. What follow$-$up steps should be taken on these vendors?

$2.$ Were any vendors unused by purchasing department? What does this fact tell us about these vendors?