questions

1.A researcher computed the F ratio for a four-group experiment. The computed F is 4.86. The degrees of freedom are 3 for the numerator and 16 for the denominator.

1. Is the computed value of F significant at p < .05? Explain.
2. Is it significant at p < .01? Explain

2. Explain the difference between a t test for independent groups and a t test for matched groups.