What type of tail-test/excel function is this asking me to do?

(2-5) (1 pt.) In the Reg Worksheet beside the "Full Regression results" (please check Week 10 lab Excel file for details reference): Reduced Regression results, with this Reduced Regression leaving out two or more of the explanatory variables included in your Full Regression, plus the value and the formula you used to compute the value for a Partial F statistic for testing the null hypothesis that the true coefficients of all the variables that are included in your Full, but not in your Reduced regression model are simultaneously equal to 0.