Std. Dev/n) .(15 points) The following table shows the results of regressing the natural logarithm of California General Fund expenditures, in billions of nominal dollars, against year beginning in 1968 and ending in 2000. A plot of actual, estimated and residual values follows. .How much of the variance in the dependent variable is explained by trend? .What is the meaning of the F statistic in the table? Is it significant?