Refer to the Lincolnville School District bus data. A. Refer to the maintenance cost variable. The mean maintenance cost for last year is $4,552 with a standard deviation of $2332. Estimate the number of buses with a maintenance cost of more than $6,000. Compare that with the actual number. Create frequency distribution of maintenance cost. Is the distribution normally distributed. Refer to the variable on the number of miles driven since the last maintenance. The mean is 11,121 and the standard deviation is 617 miles. Estimate the number of buses traveling more than 11,500 miles since the last maintenance. Compare that number with the actual value. Create frequency distribution of miles since maintenance cost. Is the distribution normally distributed?

Data Set 3 --Lincolnville School District Bus Data

ID Manufacturer Engine Type (0=diesel) Capacity Maintenance Age Odometer Miles Miles

10 Keiser 1 14 4646 5 54375 11973

396 Thompson 0 14 1072 2 21858 11969

122 Bluebird 1 55 9394 10 116580 11967

751 Keiser 0 14 1078 2 22444 11948

279 Bluebird 0 55 1008 2 22672 11925

500 Bluebird 1 55 5329 5 50765 11922

520 Bluebird 0 55 4794 10 119130 11896

759 Keiser 0 55 3952 8 87872 11889

714 Bluebird 0 42 3742 7 73703 11837

875 Bluebird 0 55 4376 9 97947 11814

600 Bluebird 0 55 4832 10 119860 11800

953 Bluebird 0 55 5160 10 117700 11798

101 Bluebird 0 55 1955 4 41096 11789

358 Bluebird 0 55 2775 6 70086 11782

29 Bluebird 1 55 5352 6 69438 11781

365 Keiser 0 55 3065 6 63384 11778

162 Keiser 1 55 3143 3 31266 11757

686 Bluebird 0 55 1569 3 34674 11707

370 Keiser 1 55 7766 8 86528 11704

887 Bluebird 0 55 3743 8 93672 11698

464 Bluebird 1 55 2540 3 34530 11698

948 Keiser 0 42 4342 9 97956 11691

678 Keiser 0 55 3361 7 75229 11668

481 Keiser 1 6 3097 3 34362 11662

43 Bluebird 1 55 8263 9 102969 11615

704 Bluebird 0 55 4218 8 83424 11610

814 Bluebird 0 55 2028 4 40824 11576

39 Bluebird 1 55 5821 6 69444 11533

699 Bluebird 1 55 9069 9 98307 11518

75 Bluebird 0 55 3011 6 71970 11462

693 Keiser 1 55 9193 9 101889 11461

989 Keiser 0 55 4795 9 106605 11418

982 Bluebird 0 55 505 1 10276 11359

321 Bluebird 0 42 2732 6 70122 11358

724 Keiser 0 42 3754 8 91968 11344

732 Keiser 0 42 4640 9 101196 11342

880 Keiser 1 55 8410 9 97065 11336

193 Thompson 0 14 5922 11 128711 11248

884 Bluebird 0 55 4364 9 92457 11231

57 Bluebird 0 55 3190 7 79240 11222

731 Bluebird 0 42 3213 6 68526 11168

61 Keiser 0 55 4139 9 103536 11148

135 Bluebird 0 55 3560 7 76426 11127

833 Thompson 0 14 3920 8 90968 11112

671 Thompson 1 14 6733 8 89792 11100

692 Bluebird 0 55 3770 8 93248 11048

200 Bluebird 0 55 5168 10 103700 11018

754 Keiser 0 14 7380 14 146860 11003

540 Bluebird 1 55 3656 4 45284 10945

660 Bluebird 1 55 6213 6 64434 10911

353 Keiser 1 55 4279 4 45744 10902

482 Bluebird 1 55 10575 10 116534 10802

398 Thompson 0 6 4752 9 95922 10802

984 Bluebird 0 55 3809 8 87664 10760

977 Bluebird 0 55 3769 7 79422 10759

705 Keiser 0 42 2152 4 47596 10755

767 Keiser 0 55 2985 6 71538 10726

326 Bluebird 0 55 4563 9 107343 10724

120 Keiser 0 42 4723 10 110320 10674

554 Bluebird 0 42 1826 4 44604 10662

695 Bluebird 0 55 1061 2 23152 10633

9 Keiser 1 55 3527 4 46848 10591

861 Bluebird 1 55 9669 10 106040 10551

603 Keiser 0 14 2116 4 44384 10518

156 Thompson 0 14 6212 12 140460 10473

427 Keiser 1 55 6927 7 73423 10355

883 Bluebird 1 55 1881 2 20742 10344

168 Thompson 1 14 7004 7 83006 10315

954 Bluebird 0 42 5284 10 101000 10235

768 Bluebird 0 42 3173 7 71778 10227

490 Bluebird 1 55 10133 10 106240 10210

725 Bluebird 0 55 2356 5 57065 10209

45 Keiser 0 55 3124 6 60102 10167

38 Keiser 1 14 5976 6 61662 10140

314 Thompson 0 6 5408 11 128117 10128

507 Bluebird 0 55 3690 7 72849 10095

40 Bluebird 1 55 9573 10 118470 10081

918 Bluebird 0 55 2470 5 53620 10075

387 Bluebird 1 55 6863 8 89960 10055

418 Bluebird 0 55 4513 9 104715 10000