Why is it important to report the F-statistic in regression analysis?

It indicates whether all the regression coefficients are statistically significant from zero.

It indicates whether at least one regression coefficient is statistically significant from zero.

It is not important when the slope is significant.

All of the above.

Which statement(s) is (are) true about the mean squared error from a regression model?

It is used to find confidence intervals.

All answers are correct.

It is equal to the sum of squared errors divided by the error degrees of freedom.

It is key component in understanding the results of a regression.