Question: c) 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

c) An air-conditioning repair department manager

c) 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 Problem Customer Type Job Number Problem Customer Type FIR 315 FIC O/R Job Number 301 302 303 304 305 306 307 308 309 316 317 318 NC Number 329 330 331 332 333 0/C WIC NR O/C F/R Problem Customer Type / NR NR W/R O/R / 319 320 334 N/R W/C N/R FIR NC WIR 321 F/R 335 NR 336 W/R O/R F/R 337 310 NR NC 338 0/C O/R 311 312 313 314 339 322 323 324 325 326 327 328 N/R FC N/R W/C 340 F/R NR / 341 FIR O/R WIC O/C Key Problem type: N-Noisy F-Equipment failure w - Runs warm 0 - Odor Customer type: C - Commercial customer R- Residential customer Required: Using the data, construct a Pareto diagram for each type of customer. Advise the manager on improvement efforts. (6 marks)

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