Suppose you are testing the statistical significance (at the 1% significance level) of a parameter estimate from the regression model: M = a + bR + cI which is estimated using a cross-section data set on 22 firms. The critical value of the appropriate test statistic is Multiple Choice tcritical = 2.861tcritical = 2.861 . tcritical = ?2.845tcritical = ?2.845 . tcritical = 2.845tcritical = 2.845 . Fcritical = 5.93Fcritical = 5.93 . Fcritical = 19.44Fcritical = 19.44 .