Statistical questions 10 points PLEASE SOMEONE HELP?

hahah dude how do you not know this one, this is simple...i mean one if you have a graphing calculator you can just key it in under the stats on under test and two sample z interval as for the by hand it is x1-x2 Plus or minus 1.985(the z score for a 95% interval) times ((s1/n1)-(s2/n2))...i believe that should do it, but i would defineately check with a graphing calculator