Recall from the text:

$$Regular changes require a business approver and an IT approver before they can be implemented.

$$Emergency changes do not have to have business or IT manager approval; however, they require a post$-$implementation approval after they are implemented.

Questions

$1.$Which month had the highest count of changes opened?$$

$2.$How many emergency changes were opened in July $2021?$

$3.$Which application had the highest count of regular changes submitted?$$

$4.$Which application had the highest count of emergency changes submitted?$$

$5.$How many infrastructure emergency changes were opened in September $2021?$

$6.$How many high$-$risk changes did Julia$$s Cookies$$ firewall have opened overall?$$

$7.$How many days, on average, did it take for a change to be implemented after it received IT approval?$$

$8.$How many regular changes did not receive IT manager approval before being implemented?$$

Take it to the next level!

$9.$How many changes received post$-$implementation review within three days or more from the time the change was implemented? $($Hint: Use $=$DAYS $())$

$10.$Which application had $17$ emergency changes during the testing period and received a post$-$implementation review three days after the changes were implemented?