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Required information Skip to question [The following information applies to the questions displayed below.] An air-conditioning repair department manager has compiled data on the primary

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[The following information applies to the questions displayed below.] 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 N/C 315 N/R 329 N/R
302 N/R 316 W/C 330 O/R
303 N/R 317 F/C 331 N/R
304 N/C 318 N/R 332 W/C
305 F/R 319 W/C 333 O/R
306 F/R 320 F/C 334 F/R
307 N/C 321 F/R 335 F/R
308 O/C 322 F/C 336 N/C
309 F/R 323 O/R 337 O/R
310 O/C 324 N/C 338 F/C
311 W/C 325 F/R 339 N/R
312 W/R 326 N/R 340 O/R
313 N/R 327 N/R 341 O/R
314 O/C 328 F/C

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

a. Using the data, prepare a check sheet for the problem types for each customer type. (1) Residential customer type

Residential
Failed
Noisy
Warm
Odour
Totals

(2) Commercial customer type

Commercial
Warm
Odor
Failed
Noisy
Totals

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