An air$-$conditioning repair department manager has compiled data on the primary reason for $41$ service calls for the previous week, as shown in the table.

Job

Number Problem$/$

Customer Type Job

Number Problem$/$

Customer Type Job

Number Problem$/$

Customer Type

$301$ F$/$C $315$ N$/$C $329$ N$/$C

$302$ F$/$R $316$ N$/$R $330$ F$/$R

$303$ O$/$C $317$ N$/$R $331$ N$/$R

$304$ O$/$C $318$ N$/$C $332$ N$/$R

$305$ W$/$C $319$ N$/$R $333$ N$/$R

$306$ W$/$R $320$ F$/$R $334$ N$/$R

$307$ O$/$R $321$ O$/$C $335$ O$/$C

$308$ N$/$R $322$ W$/$C $336$ W$/$C

$309$ F$/$C $323$ O$/$R $337$ N$/$R

$310$ N$/$R $324$ F$/$C $338$ F$/$R

$311$ O$/$C $325$ W$/$C $339$ O$/$R

$312$ F$/$R $326$ O$/$R $340$ N$/$R

$313$ O$/$C $327$ F$/$C $341$ N$/$R

$314$ W$/$C $328$ F$/$R

Click here for the Excel Data File

Key: Problem type: Customer type:

N $=$ Noisy C $=$ Commercial customer

F $=$ Equipment failure R $=$ Residential customer

W $=$ Runs warm

O $=$ Odor

Note: The order of defects listed in Parts $(1)$ and $(2)$ may be different.

a$.$ Using the data, prepare a check sheet for the problem types for each customer type.

$(1)$ Residential customer type

$(2)$ Commercial customer type An air$-$conditioning repair department manager has compiled data on the primary reason for $41$ service calls for the

previous week, as shown in the table.

Click here for the Excel Data File

Note: The order of defects listed in Parts $(1)$ and $(2)$ may be different. a$.$ Using the data, prepare a check sheet for the problem types for each customer type.

$(1)$ Residential customer type

$(2)$ Commercial customer type