Confidence interval without standard deviation

[bensor00]

Hello guys, I would like to get the solution of this problem with explication, Thanks so much in advance
Translation of math terms is :
Erreur type= standard error
coefficient de dénomination multiple = multiple cofficient of determination
somme des carrés: sum of squares
moyenne des carrés : average of squares
régression : regression
degré de liberté : degree of freedom

 

[BigBeachBanana]

I would probably be able to help if you can translate everything into English.