t- distribution comfusion?

2017-11-24 8:35 pm
https://imgur.com/a/PuPgT

I'm asked to find the P (T < ?? ) , v= 26 , α = 0.005

From the table , we could notice that P (T > 2.779) , v= 26 , α = 0.005 ,
So , i think the ans should be P (T < -2.779 ) , v= 26 , α = 0.005 ,

But the ans is P (T < 2.779) , why ?
Is the ans wrong ?

回答 (1)

2017-11-24 8:44 pm
✔ 最佳答案
P (T < -2.779 ) = 0.005

you're correct
Excel output:
https://gyazo.com/634bd1ec3465716cc5cad32f2ae06e8d


收錄日期: 2021-04-24 00:54:18
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