A researcher carries out a QLR test using 25% trimming, and there are q = 5 restrictions. Answer the following questions using the values in Table 14.6 ("Critical Values of the QLR Statistic with 15% Trimming") and Appendix Table 4 ("Critical Values of the Fm o Distribution").

a. The QLR F-statistic is 4.2. Should the researcher reject the null hypothesis at the 5 % level?

b. The QLR F-statistic is 2.1. Should the researcher reject the null hypothesis at the 5 % level?

c. The QLR F-statistic is 3.5. Should the researcher reject the null hypothesis at the 5% level?