T- Test for Matched Groups

1. Outline the difference between the t test for independent groups and the t test for matched groups.

2. 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.

a. Is the computed value of f significant at p <.05? Explain.

b. Is it significant at p<.01?, Explain

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...the difference of each matched data. So, the null hypothesis will be

either mu_d=0, or mu_d>=0; or mu_d<=0.

2. 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.

a. Is the computed value of f significant at p <.05? Explain.

Given the degrees of ...