To Prof. Sun,
============

        I would like to know the critical value of t(0.025) with
df=48. It is for the assignment #11. Would you please let me know
what the value is?
        Thank you very much for your time.



Respose
=======

To   obtain t(0.025,  48),  you  can  interpolate it  using two values
t(0.025,  45) and t(0.025, 50),  which are available   from Table 4 on
page 1044. [Here  is the exact  value, t(0.025, 48)=2.010635.  You can
check how close the interpolated value is.]