When testing whether the explanatory variables are jointly s

When testing whether the explanatory variables are jointly significant at the 5% level, he  

Answer: A.            Rejects H0, and concludes that the explanatory variables are jointly significant

Can someone explain this better, i dont understand how he calculated the p-value associated with the value of F(2,27)

thank you

Solution

you just need to find a value in the tables of F distribution with df1 = 2 and df2= 27 and you will get the p value

that is very lower

and as that value is lower than 0.05 we will reject Ho and conclude that the explanatory variables are jointly significant

we conclude that because p value is lower than 0.05, that means that the probability of Ho is true ( p value) is in the rejection region