How do you input a T interval in a TI84 plus calculator This

How do you input a T interval in a TI84 plus calculator? This is for a statistics course. I know I need to press stats, then tests, then t interval, but I need to enter the mean, standard deviation and confidence level in order to calculate the interval, but it is only giving me the option to input a L1, the percentage and another function I am unfamiliar with. Answer ASAP?

Solution

STAT Arrow to TESTS Choose 8:TInterval Arrow to Stats and press ENTER Arrow down to x and enter the value Arrow down to Sx and enter the value Arrow down to n:. Set it to your value of n. Arrow down to C-Level: (confidence level) and set it (as a decimal) Arrow down to Calculate ENTER