A contractor intends to bid on a job installing 30 airport security systems. Because this will be a new line of work for the contractor, he believes there will be a learning effect for the job. After reviewing time records from a similar type of activity, the contractor is convinced that an 85 percent curve is appropriate. He estimates that the first job will take his crew eight days to install. Use the following table for calculation.   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 26 .187 8.591 .259 10.449 .350 12.659 .466 15.267 .609 18.323 27 .183 8.774 .255 10.704 .346 13.005 .462 15.728 .606 18.929 28 .180 8.954 .251 10.955 .342 13.347 .458 16.186 .603 19.531 29 .177 9.131 .247 11.202 .338 13.685 .454 16.640 .599 20.131 30 .174 9.305 .244 11.446 .335 14.020 .450 17.091 .596 20.727   How many days should the contractor budget for a. The first 10 installations? (Do not round intermediate calculations. Round your final answer to 3 decimal places.) Number of days             b. The second 10 installations? (Do not round intermediate calculations. Round your final answer to 3 decimal places.) Number of days             c. The final 10 installations? (Do not round intermediate calculations. Round your final answer to 3 decimal places.) Number of days

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A contractor intends to bid on a job installing 30 airport security systems. Because this will be a new line of work for the contractor, he believes there will be a learning effect for the job. After reviewing time records from a similar type of activity, the contractor is convinced that an 85 percent curve is appropriate. He estimates that the first job will take his crew eight days to install. Use the following table for calculation.
 
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
26 .187 8.591 .259 10.449 .350 12.659 .466 15.267 .609 18.323
27 .183 8.774 .255 10.704 .346 13.005 .462 15.728 .606 18.929
28 .180 8.954 .251 10.955 .342 13.347 .458 16.186 .603 19.531
29 .177 9.131 .247 11.202 .338 13.685 .454 16.640 .599 20.131
30 .174 9.305 .244 11.446 .335 14.020 .450 17.091 .596 20.727
 

How many days should the contractor budget for
a. The first 10 installations? (Do not round intermediate calculations. Round your final answer to 3 decimal places.)
Number of days            
b. The second 10 installations? (Do not round intermediate calculations. Round your final answer to 3 decimal places.)
Number of days            
c. The final 10 installations? (Do not round intermediate calculations. Round your final answer to 3 decimal places.)
Number of days

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