Help with statistic

You want to create a 95% condence interval for a word problem. For your 95% Cl, you need a t-critical to plug ir to your C.|. formula. You can borrow the t-critical from your friendwho already did that same word problem as a hypothesis testbut ONLY if your friend's hypothesis test was O a = .05, one tail (predicted increase) O a = .01, one tail (predicted decrease) O a = .01, two tails O a = .05, one tail (predicted increase) O a = .01, one tail (predicted decrease) O a = .05, two tails