Refer to the Lincolnville School District school bus data.

a. Assume the distribution of the maintenance cost for the bus capacities does notv follow a normal distribution. Conduct a test of hypothesis at the .05 significance level to determine whether the distributions differ.

b. Assume the distribution of the maintenance cost for the fuel types, diesel or gasoline, does not follow a normal distribution. Conduct a test of hypothesis at the .05 significance level to determine whether the distributions differ.

c. Assume the distribution of the maintenance cost for the three bus manufacturers does not follow a normal distribution. Conduct a test of hypothesis at the .05 significance level to determine whether the distributions differ.

Data From Lincolnville School District school bus:

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Engine Type (0=diesel) Maintenance Odometer Manufacturer Kejser Thompson Bluebird Keiser Bluebird Bluebird Bluebird Kejser Bluebird Bluebird Bluebird Bluebird Bluebird Bluebird Bluebird Keiser Kejser Bluebird Kejser Bluebird Bluebird Kejser Keiser Keiser Bluebird Bluebird Bluebird Bluebird Bluebird Bluebird Kejser Keiser Bluebird Bluebird Kejser Keiser Keiser Thompson Bluebird Bluebird Bluebird Kejser ID Сарacity Cost Age Miles Miles 10 1 14 4646 54375 11973 396 14 1072 2 21858 11969 122 1 55 9394 10 116580 11967 751 14 1078 2 22444 11948 279 55 1008 2 22672 11925 500 1 55 5329 50765 11922 520 55 4794 10 119130 11896 759 55 3952 8 87872 11883 714 42 3742 7 73703 11837 875 55 4376 97947 11814 600 55 4832 10 119860 11800 953 55 5160 10 117700 11798 101 55 1955 4 41096 11789 358 70086 11782 55 55 2775 6 29 1 5352 69438 11781 365 55 3065 63384 11778 162 1 55 3143 31266 11758 686 55 1569 3 34674 11757 370 1 55 7766 8 86528 11707 887 55 3743 8 93672 11704 464 1 55 2540 34530 11698 948 42 4342 9. 97956 11691 678 55 3361 7 75229 11668 481 1 6 3097 3 34362 11662 43 1 55 8263 9 102969 11615 704 55 4218 8 83424 11610 814 55 2028 4 40824 11576 39 1 55 5821 69444 11533 699 1 55 9069 9 98307 11518 75 55 3011 6. 71970 11462 693 1 55 9193 101889 11461 989 55 4795 106605 11418 982 55 505 10276 11359 321 42 2732 6. 70122 11358 724 732 11344 11342 42 3754 8 91968 42 4640 101196 880 1 55 8410 97065 11336 193 14 5922 11 128711 11248 884 55 4364 9. 92457 11231 57 55 3190 7 79240 68526 11222 731 42 3213 6. 11168 61 55 4139 9. 103536 11148