Multiple regression

[DannyB0y]

CFAI q. 6b, i don’t understand when your critical value from the t-table is 1.66 that you reject the null when the test statistic is less than -1.66, instead of 1.66. where did the minus sign come from and is there a hard and fast rule for dealing with these one tailed t-tests?

 

[hei.so]

Do you mean two-tailed test? If so, just focus on the absolute value because the normal distribution is symmetrical.

 

[DannyB0y]

no its a one tail test, i understand the difference