find a t0025 when df 12 b t010 when df 25 c t095 when df

find :

a) t0.025 when d.f. = 12

b) -t0.10 when d.f. = 25

c) t0.95 when d.f. = 8

can you please show me how to find the numbers from the table? please I\'d like to have a detailed answers .. thank you

Solution

a.
Critical Value
The Value of |t | with n-1 = 12 d.f is 2.56

b.
The Value of |t | with n-1 = 25,d.f, Left Tail is -1.316

c.
The Value of |t | with n-1 = 8 d.f is 1.86