I will give you a shiny medal for some help : thank you! :3
(statistics)
(I'm not sure if I rounded this correctly or if I put it in my calculator incorrectly).

Question

I will give you a shiny medal for some help :> thank you! :3 
(statistics)
(I'm not sure if I rounded this correctly or if I put it in my calculator incorrectly).

lacris · Answer

attachment

lacris · Answer

I used the T-test on my calculator, put the initial depth in L1 and depth five years later in L2 and L3 was L1 - L2. I chose for  >mu 

List L3
Frequency: 1 
Data

All of this on a ti84 q-q
  
my p = 0.2774729659.. Im not sure what I'm doing wrong.. :c

lacris · Answer

@HolsterEmission I hope you have time to help :>

lacris · Answer

Did I use the wrong function in the calculator?

jim_thompson5910 · Answer

what are you using for your degrees of freedom?

lacris · Answer

I'm not using any degrees of freedom, I just used the T-test on my stat section of my calculator. Was I supposed to use InvNorm? Or InvT?

jim_thompson5910 · Answer

I notice you said `I chose for  >mu `
but your alternative hypothesis has the opposite sign: a less than sign

lacris · Answer

Oh I thought it was because it meant that 0 would be greater than mu Because on my calculator is says:|dw:1478847718362:dw| I got a bit confused so I chose the last because it was less than mu, but I'm not really sure.. :c