Refer to the Buena School bus data. Develop a regression equation that expresses the relationship between age of the bus and maintenance. The age of the bus is the inde- pendent variable.

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6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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  1. Refer to the Buena School bus data. Develop a regression equation that expresses the relationship between age of the bus and maintenance. The age of the bus is the inde- pendent variable.
    1. Draw a scatter diagram. What does this diagram suggest as to the relationship

between the two variables? Is it direct or indirect? Does it appear to be strong or

weak?

  1. Develop a regression equation. How much does an additional year add to the main-

tenance cost. What is the estimated maintenance cost for a 10-year-old bus?

  1. Conduct a test of hypothesis to determine whether the slope of the regression line is greater than zero. Use the .05 significance level. Interpret your findings from parts (a),

(b), and (c) in a brief report.

A
В
E
F
H
1
ID
Manufacturer Engine Type
Engine Type (0=diesel)
Сaрacity
Maintenance cost
Age
Odometer Miles
Miles
2
10
Keiser
Gasoline
1
14
4646
54375
11973
3
396
Thompson
Diesel
14
1072
2
21858
11969
4
122
Bluebird
Gasoline
1
55
9394
10
116580
11967
5
751
Keiser
Diesel
14
1078
2
22444
11948
6
279
Bluebird
Diesel
55
1008
2
22672
11925
7
500
Bluebird
Gasoline
1
55
5329
50765
11922
8
520
Bluebird
Diesel
55
4794
10
119130
11896
9
759
Keiser
Diesel
55
3952
87872
11883
10
714
Bluebird
Diesel
42
3742
7
73703
11837
11
875
Bluebird
Diesel
55
4376
9.
97947
11814
12
600
Bluebird
Diesel
55
4832
10
119860
11800
13
953
Bluebird
Diesel
55
5160
10
117700
11798
14
101
Bluebird
Diesel
55
1955
4
41096
11789
15
358
Bluebird
Diesel
55
2775
6.
70086
11782
16
29
Bluebird
Gasoline
1
55
5352
6.
69438
11781
17
365
Keiser
Diesel
55
3065
6.
63384
11778
18
162
Keiser
Gasoline
1
55
3143
31266
11758
19
686
Bluebird
Diesel
55
1569
3
34674
11757
20
370
Keiser
Gasoline
1
55
7766
8
86528
11707
21
887
Bluebird
Diesel
55
3743
8
93672
11704
22
464
Bluebird
Gasoline
1
55
2540
34530
11698
23
948
Keiser
Diesel
42
4342
9.
97956
11691
24
678
Keiser
Diesel
55
3361
7
75229
11668
25
481
Keiser
Gasoline
1
3097
3.
34362
11662
26
43
Bluebird
Gasoline
55
8263
102969
11615
27
704
Bluebird
Diesel
55
4218
8
83424
11610
28
814
Bluebird
Diesel
55
2028
4
40824
11576
29
39
Bluebird
Gasoline
1
55
5821
69444
11533
30
699
Bluebird
Gasoline
1
55
9069
9.
98307
11518
31
75
Bluebird
Diesel
55
3011
6.
71970
11462
32
693
Keiser
Gasoline
55
9193
101889
11461
33
989
Keiser
Diesel
55
4795
106605
11418
34
982
Bluebird
Diesel
55
505
1
10276
11359
35
321
Bluebird
Diesel
42
2732
6.
70122
11358
36
724
Keiser
Diesel
42
3754
8
91968
11344
37
732
Keiser
Diesel
42
4640
9.
101196
11342
38
880
Keiser
Gasoline
1
55
8410
9
97065
11336
39
193
Thompson
Diesel
14
5922
11
128711
11248
40
884
Bluebird
Diesel
55
4364
92457
11231
41
57
Bluebird
Diesel
55
3190
7
79240
11222
42
731
Bluebird
Diesel
42
3213
6
68526
11168
Bus Data 17e
+
o o o o
Transcribed Image Text:A В E F H 1 ID Manufacturer Engine Type Engine Type (0=diesel) Сaрacity Maintenance cost Age Odometer Miles Miles 2 10 Keiser Gasoline 1 14 4646 54375 11973 3 396 Thompson Diesel 14 1072 2 21858 11969 4 122 Bluebird Gasoline 1 55 9394 10 116580 11967 5 751 Keiser Diesel 14 1078 2 22444 11948 6 279 Bluebird Diesel 55 1008 2 22672 11925 7 500 Bluebird Gasoline 1 55 5329 50765 11922 8 520 Bluebird Diesel 55 4794 10 119130 11896 9 759 Keiser Diesel 55 3952 87872 11883 10 714 Bluebird Diesel 42 3742 7 73703 11837 11 875 Bluebird Diesel 55 4376 9. 97947 11814 12 600 Bluebird Diesel 55 4832 10 119860 11800 13 953 Bluebird Diesel 55 5160 10 117700 11798 14 101 Bluebird Diesel 55 1955 4 41096 11789 15 358 Bluebird Diesel 55 2775 6. 70086 11782 16 29 Bluebird Gasoline 1 55 5352 6. 69438 11781 17 365 Keiser Diesel 55 3065 6. 63384 11778 18 162 Keiser Gasoline 1 55 3143 31266 11758 19 686 Bluebird Diesel 55 1569 3 34674 11757 20 370 Keiser Gasoline 1 55 7766 8 86528 11707 21 887 Bluebird Diesel 55 3743 8 93672 11704 22 464 Bluebird Gasoline 1 55 2540 34530 11698 23 948 Keiser Diesel 42 4342 9. 97956 11691 24 678 Keiser Diesel 55 3361 7 75229 11668 25 481 Keiser Gasoline 1 3097 3. 34362 11662 26 43 Bluebird Gasoline 55 8263 102969 11615 27 704 Bluebird Diesel 55 4218 8 83424 11610 28 814 Bluebird Diesel 55 2028 4 40824 11576 29 39 Bluebird Gasoline 1 55 5821 69444 11533 30 699 Bluebird Gasoline 1 55 9069 9. 98307 11518 31 75 Bluebird Diesel 55 3011 6. 71970 11462 32 693 Keiser Gasoline 55 9193 101889 11461 33 989 Keiser Diesel 55 4795 106605 11418 34 982 Bluebird Diesel 55 505 1 10276 11359 35 321 Bluebird Diesel 42 2732 6. 70122 11358 36 724 Keiser Diesel 42 3754 8 91968 11344 37 732 Keiser Diesel 42 4640 9. 101196 11342 38 880 Keiser Gasoline 1 55 8410 9 97065 11336 39 193 Thompson Diesel 14 5922 11 128711 11248 40 884 Bluebird Diesel 55 4364 92457 11231 41 57 Bluebird Diesel 55 3190 7 79240 11222 42 731 Bluebird Diesel 42 3213 6 68526 11168 Bus Data 17e + o o o o
A
B
E
F
G
H
41
57
Bluebird
Diesel
55
3190
7
79240
11222
42
731
Bluebird
Diesel
42
3213
68526
11168
43
61
Keiser
Diesel
55
4139
103536
11148
44
135
Bluebird
Diesel
55
3560
7
76426
11127
45
833
Thompson
Diesel
14
3920
8
90968
11112
46
671
Thompson
Gasoline
1
14
6733
8
89792
11100
47
692
Bluebird
Diesel
55
3770
8
93248
11048
48
200
Bluebird
Diesel
55
5168
10
103700
11018
49
754
Keiser
Diesel
14
7380
14
146860
11003
50
540
Bluebird
Gasoline
1
55
3656
4
45284
10945
51
660
Bluebird
Gasoline
1
55
6213
6.
64434
10911
52
353
Keiser
Gasoline
1
55
4279
4
45744
10902
53
482
Bluebird
Gasoline
1
55
10575
10
116534
10802
54
398
Thompson
Diesel
6
4752
9.
95922
10802
55
984
Bluebird
Diesel
55
3809
8
87664
10760
56
977
Bluebird
Diesel
55
3769
7
79422
10759
57
705
Keiser
Diesel
42
2152
4
47596
10755
58
767
Keiser
Diesel
55
2985
71538
10726
59
326
Bluebird
Diesel
55
4563
107343
10724
60
120
Keiser
Diesel
42
4723
10
110320
10674
61
554
Bluebird
Diesel
42
1826
4
44604
10662
62
695
Bluebird
Diesel
55
1061
2
23152
10633
63
Keiser
Gasoline
1
55
3527
4
46848
10591
64
861
Bluebird
Gasoline
1
55
9669
10
106040
10551
65
603
Keiser
Diesel
14
2116
4
44384
10518
66
156
Thompson
Diesel
14
6212
12
140460
10473
67
427
Keiser
Gasoline
1
55
6927
7
73423
10355
68
883
Bluebird
Gasoline
1
55
1881
2
20742
10344
69
168
Thompson
Gasoline
1
14
7004
7
83006
10315
70
954
Bluebird
Diesel
42
5284
10
101000
10235
71
768
Bluebird
Diesel
42
3173
7
71778
10227
72
490
Bluebird
Gasoline
1
55
10133
10
106240
10210
73
725
Bluebird
Diesel
55
2356
57065
10209
74
45
Keiser
Diesel
55
3124
6.
60102
10167
75
38
Keiser
Gasoline
1
14
5976
6.
61662
10140
76
314
Thompson
Diesel
6
5408
11
128117
10128
77
507
Bluebird
Diesel
55
3690
7
72849
10095
78
40
Bluebird
Gasoline
1
55
9573
10
118470
10081
79
918
Bluebird
Diesel
55
2470
53620
10075
80
387
Bluebird
Gasoline
1
55
6863
8
89960
10055
81
418
Bluebird
Diesel
55
4513
104715
10000
82
Bus Data 17e
+
O o oo
Transcribed Image Text:A B E F G H 41 57 Bluebird Diesel 55 3190 7 79240 11222 42 731 Bluebird Diesel 42 3213 68526 11168 43 61 Keiser Diesel 55 4139 103536 11148 44 135 Bluebird Diesel 55 3560 7 76426 11127 45 833 Thompson Diesel 14 3920 8 90968 11112 46 671 Thompson Gasoline 1 14 6733 8 89792 11100 47 692 Bluebird Diesel 55 3770 8 93248 11048 48 200 Bluebird Diesel 55 5168 10 103700 11018 49 754 Keiser Diesel 14 7380 14 146860 11003 50 540 Bluebird Gasoline 1 55 3656 4 45284 10945 51 660 Bluebird Gasoline 1 55 6213 6. 64434 10911 52 353 Keiser Gasoline 1 55 4279 4 45744 10902 53 482 Bluebird Gasoline 1 55 10575 10 116534 10802 54 398 Thompson Diesel 6 4752 9. 95922 10802 55 984 Bluebird Diesel 55 3809 8 87664 10760 56 977 Bluebird Diesel 55 3769 7 79422 10759 57 705 Keiser Diesel 42 2152 4 47596 10755 58 767 Keiser Diesel 55 2985 71538 10726 59 326 Bluebird Diesel 55 4563 107343 10724 60 120 Keiser Diesel 42 4723 10 110320 10674 61 554 Bluebird Diesel 42 1826 4 44604 10662 62 695 Bluebird Diesel 55 1061 2 23152 10633 63 Keiser Gasoline 1 55 3527 4 46848 10591 64 861 Bluebird Gasoline 1 55 9669 10 106040 10551 65 603 Keiser Diesel 14 2116 4 44384 10518 66 156 Thompson Diesel 14 6212 12 140460 10473 67 427 Keiser Gasoline 1 55 6927 7 73423 10355 68 883 Bluebird Gasoline 1 55 1881 2 20742 10344 69 168 Thompson Gasoline 1 14 7004 7 83006 10315 70 954 Bluebird Diesel 42 5284 10 101000 10235 71 768 Bluebird Diesel 42 3173 7 71778 10227 72 490 Bluebird Gasoline 1 55 10133 10 106240 10210 73 725 Bluebird Diesel 55 2356 57065 10209 74 45 Keiser Diesel 55 3124 6. 60102 10167 75 38 Keiser Gasoline 1 14 5976 6. 61662 10140 76 314 Thompson Diesel 6 5408 11 128117 10128 77 507 Bluebird Diesel 55 3690 7 72849 10095 78 40 Bluebird Gasoline 1 55 9573 10 118470 10081 79 918 Bluebird Diesel 55 2470 53620 10075 80 387 Bluebird Gasoline 1 55 6863 8 89960 10055 81 418 Bluebird Diesel 55 4513 104715 10000 82 Bus Data 17e + O o oo
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