Choose the dependent variable (the response variable to be ''explained'') and the independent variable (the predictor explanatory variable).

(a-1) dependent variable

(a-2) independent variable (b) obtain the regression equation Y = _ X+ _ (c) calculate R2)

(d-1) Zero is contained in the 95% confidence interval.

(d-2) The slope is different from zero. (e) Calculate the degrees of freedom and t-critical for a two-tailed t-test for zero slopes at a = .05.

Degrees of Freedom _.

t-critical _.