1-The p-value is less than or equal to the significance level.

The alternative hypothesis is true.

The null hypothesis is true.

The p-value is larger than the significance level.

2-The regression equation is used to...

...predict the independent variable given a value of the x-variable.

...predict the value of the explanatory variable based of the response variable.

...predict the value of the response variable given a value of the explanatory variable.

...predict the dependent variable given a value of the y-variable.

3-A Pearson correlation coefficient of 0.80 infers...

Almost no correlation because 0.80 is close to 1.00

80% of the variation in one variable can be explained by the other

Coefficient of determination is 0.64

Coefficient of determination is 0.20

None of the above