Several ER physicians complained that turn-around times for lab tests were "out of control" and were constantly getting worse. In order to test their theory, the following turn-around times in minutes were collected (Table 2). Use Excel to construct appropriate control charts (attach outputs)

Table 2. Turn-around Time of Lab Tests (Minutes)

Day	Test 1	Test 2	Test 3	Day	Test 1	Test 2	Test 3
1	86	73	75	13	85	63	110
2	90	82	95	14	69	71	112
3	101	74	89	15	106	93	82
4	76	71	105	16	89	95	73
5	102	76	115	17	85	101	68
6	81	82	55	18	95	89	88
7	75	50	95	19	72	60	97
8	92	65	93	20	95	84	61
9	93	71	82	21	75	97	115
10	109	92	76	22	60	110	56
11	70	84	67	23	77	55	99
12	80	79	58