Consider a t distribution with 25 degrees of freedom Compute

Consider a t distribution with 25 degrees of freedom. Compute p (-1.14

Solution

a) for n=25 df

then P( -1.14 <t < 1.14) = 0.3729+0.3729

= 0.7458

b) P(t>=c)=0.05

1-P(t<c) =0.05

p(t<c) =0.95

By table values

c=1.65