Problem 4 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. Using the data, make a check sheet for the problem types for each customer type, and then construct a Pareto diagram for each type of customer. Problem! Problem! Problem! Job Customer Job Customer Job Customer Number :! ype Number jype Number ! ype 301 FIR 315 F/C 329 O/C 302 OR 316 O/C 330 NR 303 MC 317 W/C 331 NR 304 MR 318 N/R 332 W/R 305 W/C 319 O/C 333 OR 306 MR 320 FR 334 O/C 307 FIR 321 FR 335 NR 308 MC 322 O/R 336 W/R 309 \"UK 323 F/R 337 OK: 310 MR 324 MC 338 OR 311 NR 325 F/R 339 HR 312 FIG 326 O/R 340 MR 313 MR 327 W/C 341 O/C 314 W/C 328 O/C