math/statistic t-test part 1

STAT_222_M8-9AltimeterError.xlsx

Altimeter error

Compare two different companies or compare one company vs Hypothesized mean						ACME error before and after maintenance		Brand X error before and after maintenance
Altimeter Brand A	Altimeter Brand B	Altimeter Brand C	Altimeter Brand D	Altimeter Brand E	Altimeter Brand F	ACME Altimeter error before adjustment-calibration	ACME Altimeter error after adjustment-calibration	Brand X Altimeter error before adjustment-calibration	Brand X Altimeter error after adjustment-calibration
42	38	16	47	42	39	41	9	14	0
0	38	32	35	6	4	7	11	8	5
0	29	4	18	12	6	32	4	33	4
3	4	26	31	22	38	25	4	33	9
30	36	28	10	12	42	25	9	26	6
9	29	20	21	22	3	32	1	32	9
45	32	25	25	42	38	4	5	19	9
32	5	29	10	10	9	44	10	7	4
40	45	32	19	7	17	4	11	29	2
5	14	34	31	9	13	23	3	31	6
37	27	23	30	11	34	39	13	20	6
27	38	36	26	15	48	42	1	31	3
25	6	15	14	33	45	29	10	2	6
36	43	43	34	19	14	14	11	11	5
10	22	8	49	18	12	26	9	11	7
1	38	10	4	20	49	23	2	29	5
9	20	26	36	32	25	42	5	32	3
43	43	46	47	17	3	43	3	19	2
46	3	23	36	44	5	1	5	26	6
19	0	17	10	12	47	10	12	32	5
* Note - Error (distance from zero) achieved by converting data to absolute values.