The business problem facing the director of broadcasting operations for a television station was the issue of standby hours (i.e. hours in which unionized graphic artists at the station are paid but are not actually involved in any activity) and what factors were related to standby hours. A study of standby hours was conducted for 26 weeks. The variables in the study are described below and the data from the study are shown in the accompanying table. Complete parts a through g below. Standby hours (Y)-Total number of standby hours in a week Total staff present (X,)-Weekly total of people-days Remote hours (X,)-Number of hours worked by employees off-site a. State the multiple regression equation. Y; =+ (OX1,+ (OX21 (Round to one decimal place as needed.) b. Interpret the meaning of the slopes, b, and b2, in this problem. Choose the correct answer below. O A. For a given number of remote hours, each increase of one unit of total staff present and one unit increase in standby hours is estimated to result in a mean increase in remote hours of b, and b2 units, respectively. B. For a given number of remote hours, each increase of one unit of total staff present is estimated to result in a mean increase in standby hours of b, units. For a given number of total staff present, each increase of one unit in remote hours is estimated to result in a mean decrease in standby hours of the absolute value of b, units. C. Each increase in standby hours is estimated to result in a mean increase in total staff present of b, units and a mean decrease in remote hours of the absolute value of b, units. D. The slopes, b, and b2, cannot be interpreted individually. c. Explain why the regression coefficient, bo, has no practical meaning in the context of this problem. Choose the correct answer below. A. The coefficient bo has no practical meaning in this context because it corresponds to the number of staff present and the remote hours when there are no standby hours. Tho goofficient h. has no practical meaning in this context because Y depends on not only bo, but b, and b, as

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The business problem facing the director of broadcasting operations for a television station was the issue of standby hours
(i.e. hours in which unionized graphic artists at the station are paid but are not actually involved in any activity) and what
factors were related to standby hours. A study of standby hours was conducted for 26 weeks. The variables in the study are
described below and the data from the study are shown in the accompanying table. Complete parts a through g below.
Standby hours (Y)-Total number of standby hours in a week
Total staff present (X,)-Weekly total of people-days
Remote hours (X2)-Number of hours worked by employees off-site
a. State the multiple regression equation.
Y; =+ (OX1i + (O X2 (Round to one decimal place as needed.)
b. Interpret the meaning of the slopes, b, and b2, in this problem. Choose the correct answer below.
O A. For a given number of remote hours, each increase of one unit of total staff present and one unit increase in
standby hours is estimated to result in a mean increase in remote hours of b, and b2 units, respectively.
B. For a given number of remote hours, each increase of one unit of total staff present is estimated to result in a mean
increase in standby hours of b, units. For a given number of total staff present, each increase of one unit in remote
hours is estimated to result in a mean decrease in standby hours of the absolute value of b, units.
C. Each increase in standby hours is estimated to result in a mean increase in total staff present of b, units and a mean
decrease in remote hours of the absolute value of b, units.
OD. The slopes, b, and b2, cannot be interpreted individually.
c. Explain why the regression coefficient, bo, has no practical meaning in the context of this problem. Choose the correct
answer below.
O A. The coefficient bo has no practical meaning in this context because it corresponds to the number of staff present
and the remote hours when there are no standby hours.
O R. The coefficient bo has no practical meaning in this context because Y depends on not only bo, but b, and b, as
Transcribed Image Text:The business problem facing the director of broadcasting operations for a television station was the issue of standby hours (i.e. hours in which unionized graphic artists at the station are paid but are not actually involved in any activity) and what factors were related to standby hours. A study of standby hours was conducted for 26 weeks. The variables in the study are described below and the data from the study are shown in the accompanying table. Complete parts a through g below. Standby hours (Y)-Total number of standby hours in a week Total staff present (X,)-Weekly total of people-days Remote hours (X2)-Number of hours worked by employees off-site a. State the multiple regression equation. Y; =+ (OX1i + (O X2 (Round to one decimal place as needed.) b. Interpret the meaning of the slopes, b, and b2, in this problem. Choose the correct answer below. O A. For a given number of remote hours, each increase of one unit of total staff present and one unit increase in standby hours is estimated to result in a mean increase in remote hours of b, and b2 units, respectively. B. For a given number of remote hours, each increase of one unit of total staff present is estimated to result in a mean increase in standby hours of b, units. For a given number of total staff present, each increase of one unit in remote hours is estimated to result in a mean decrease in standby hours of the absolute value of b, units. C. Each increase in standby hours is estimated to result in a mean increase in total staff present of b, units and a mean decrease in remote hours of the absolute value of b, units. OD. The slopes, b, and b2, cannot be interpreted individually. c. Explain why the regression coefficient, bo, has no practical meaning in the context of this problem. Choose the correct answer below. O A. The coefficient bo has no practical meaning in this context because it corresponds to the number of staff present and the remote hours when there are no standby hours. O R. The coefficient bo has no practical meaning in this context because Y depends on not only bo, but b, and b, as
Standby
Hours (Y) Present (X,)
Total Staff
Remote
Hours (X2
245
338
414
177
333
596
270
358
656
211
372
631
196
339
528
135
289
409
195
334
382
118
293
399
116
325
343
147
311
338
154
304
353
146
312
289
115
283
388
161
307
402
274
322
151
245
335
228
201
350
271
183
339
440
237
327
475
175
328
347
152
319
449
188
325
336
188
322
267
197
317
235
261
315
164
232
331
270
Transcribed Image Text:Standby Hours (Y) Present (X,) Total Staff Remote Hours (X2 245 338 414 177 333 596 270 358 656 211 372 631 196 339 528 135 289 409 195 334 382 118 293 399 116 325 343 147 311 338 154 304 353 146 312 289 115 283 388 161 307 402 274 322 151 245 335 228 201 350 271 183 339 440 237 327 475 175 328 347 152 319 449 188 325 336 188 322 267 197 317 235 261 315 164 232 331 270
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