when you are actually sort of writing er, say if you are, when you are doing your project or doing your  work  it's not just sufficient to say always t ratio is greater than two, therefore, it's statistically significant, you must calculate the er correct critical value you use, right, for th for each t ratio and also if you are looking at any diagnostics or looking at the significance of the regression which is an f statistic  right you must give the five percent or ten percent whichever you choose.