WEBVTT 00:00:00.160 --> 00:00:05.035 Now calculate the t-critical values fora two-tilled test at an alpha level of 00:00:05.035 --> 00:00:09.632 0.05. Since this is two-tilled, the t-critical values will be positive and 00:00:09.632 --> 00:00:11.040 negative what?