Turn in Rawlings # 2.14 and 3.5 (see comments below).

**Problem 1:**- For simple linear regression, assuming that the
errors are uncorrelated with common mean, 0, and common variance,
, derive and , .
Do
*not*use matrix algebra to do this problem. **Rawlings:**- # 2.1, 2.2, 2.3, 2.4, 2.6, 2.14 (you are encouraged
to use S-Plus to compute the various matrix products and inverses for
this problem), 2.18, 3.1, 3.2, 3.3, 3.4, 3.5 (again, you may wish to
use Splus to do the matrix calculations, but do the problem without
using the
`lm()`function, or any other built in regression function), 3.6, 3.13.

Thu Apr 18 15:52:37 EDT 1996