H0: u=2.6

H1: u<>2.6

Based on a sample of 65 people, the sample mean GPA was 2.55 with a standard deviation of 0.05

I entered the stats T-Test in my TI 83.

u0 = 2.6

xbar: 2.55

Sx: .05

n = 65

The test statistic is =-8.06 (I know this is correct)

P Value = 2.503916 E -11 (this is where I am erroring)

Do I need to take that value and place in normalcdf(-10^99, 2.50, 0,1) then multiply x 2 OR should I just take 2.50 (the answer is to be rounded 2 decimals)? I have tried both results and it was wrong. I also don't understand how to compute E -11 power.