Time	Air Quality
0:00:00	1
0:00:30	1
0:01:00	1
0:01:30	1
0:02:00	1
0:02:30	1
0:03:00	1
0:03:30	1
0:04:00	1
0:04:30	1
0:05:00	1
0:05:30	1
0:06:00	1
0:06:30	1
0:07:00	1
0:07:30	1
0:08:00	1
0:08:30	1
0:09:00	1
0:09:30	1
0:10:00	1
0:10:30	1
0:11:00	1
0:11:30	1
0:12:00	1
0:12:30	1
0:13:00	1
0:13:30	1
0:14:00	1
0:14:30	1
0:15:00	1
0:15:30	1
0:16:00	1
0:16:30	0
0:17:00	1
0:17:30	1
0:18:00	1
0:18:30	1
0:19:00	1
0:19:30	1
0:20:00	1
0:20:30	1
0:21:00	1
0:21:30	1
0:22:00	1
0:22:30	1
0:23:00	1
0:23:30	1

An Air Quality instrument logs 0 when standards are not met and 1 when standards are met. The log is saved to file DATA. First, compute the proportion meeting standards as the mean of Air Quality values. Second, at alpha = 0.10 (sensitive, exploratory), test the hypothesis that proportion of times that air quality meets standards is at least 90%