Question: You need to develop a labor time estimate for a customer order of 20 network installations. It is estimated that the first installation will require

You need to develop a labor time estimate for a customer order of 20 network installations. It is estimated that the first installation will require 60 hours of labor and a learning curve of 85 percent is expected.

Table 11.9 Learning Curve Coefficients
70% 75% 80% 85% 90%
Unit Number Unit Time Total Time Unit Time Total Time Unit Time Total Time Unit Time Total Time Unit Time Total Time
1 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000
2 .700 1.700 .750 1.750 .800 1.800 .850 1.850 .900 1.900
3 .568 2.268 .634 2.384 .702 2.502 .773 2.623 .846 2.746
4 .490 2.758 .562 2.946 .640 3.142 .723 3.345 .810 3.556
5 .437 3.195 .513 3.459 .596 3.738 .686 4.031 .783 4.339
6 .398 3.593 .475 3.934 .562 4.299 .657 4.688 .762 5.101
7 .367 3.960 .446 4.380 .534 4.834 .634 5.322 .744 5.845
8 .343 4.303 .422 4.802 .512 5.346 .614 5.936 .729 6.574
9 .323 4.626 .402 5.204 .493 5.839 .597 6.533 .716 7.290
10 .306 4.932 .385 5.589 .477 6.315 .583 7.116 .705 7.994
11 .291 5.223 .370 5.958 .462 6.777 .570 7.686 .695 8.689
12 .278 5.501 .357 6.315 .449 7.227 .558 8.244 .685 9.374
13 .267 5.769 .345 6.660 .438 7.665 .548 8.792 .677 10.052
14 .257 6.026 .334 6.994 .428 8.092 .539 9.331 .670 10.721
15 .248 6.274 .325 7.319 .418 8.511 .530 9.861 .663 11.384
16 .240 6.514 .316 7.635 .410 8.920 .522 10.383 .656 12.040
17 .233 6.747 .309 7.944 .402 9.322 .515 10.898 .650 12.690
18 .226 6.973 .301 8.245 .394 9.716 .508 11.405 .644 13.334
19 .220 7.192 .295 8.540 .388 10.104 .501 11.907 .639 13.974
20 .214 7.407 .288 8.828 .381 10.485 .495 12.402 .634 14.608
21 .209 7.615 .283 9.111 .375 10.860 .490 12.892 .630 15.237
22 .204 7.819 .277 9.388 .370 11.230 .484 13.376 .625 15.862
23 .199 8.018 .272 9.660 .364 11.594 .479 13.856 .621 16.483
24 .195 8.213 .267 9.928 .359 11.954 .475 14.331 .617 17.100
25 .191 8.404 .263 10.191 .355 12.309 .470 14.801 .613 17.713

(a)

How many labor-hours are required for the fifteenth installation? enter a number of labor-hours hours (Round your answer to 2 decimal places, e.g.,5.12.)

(b) How many labor-hours are required for the twentieth installation?

(c) How many labor-hours are required to complete all 20 installations?

(d) If the average labor cost is $32.00, what is the total labor cost for installing the networks?

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