  We update the analysis of the precision electroweak tests in terms of 4
epsilon parameters, $\epsilon_{1,2,3,b}$, to obtain more accurate experimental
values of them by taking into account the new LEP data released at the 28th
ICHEP (1996, Poland). We also compute $\epsilon_1$ and $\epsilon_b$ in the
context of the no-scale $SU(5)\times U(1)$ supergravity model to obtain the
updated constraints by imposing the correlated constraints in terms of the
experimental ellipses in the $\epsilon_1-\epsilon_b$ plane and also by imposing
the new bound on the lightest chargino mass, $m_{\chi^\pm_1}\gtrsim 79$ $ GeV$.
Upon imposing these new experimental results, we find that the situations in
the no-scale model are much more favorable than those in the standard model,
and if $m_t\gtrsim 170$ $ GeV$, then the allowed regions at the 95% C.~L. in
the no-scale model are $\tan\beta\gtrsim 4$ and $m_{\chi^\pm_1}\lesssim 120
(82)$ $ GeV$ for $\mu>0 (\mu<0)$, which are in fact much more stringent than in
our previous analysis. Therefore, assuming that $m_t\gtrsim 170$ $ GeV$, if the
lightest chargino mass bound were to be pushed up only by a few GeV, the sign
on the Higgs mixing term $\mu$ in the no-scale model could well be determined
from the $\epsilon_1-\epsilon_b$ constraint to be positive at the 95% C.~L. At
any rate, better accuracy in the measured $m_t$ from the Tevatron in the near
future combined with the LEP data is most likely to provide a decisive test of
the no-scale $SU(5)\times U(1)$ supergravity model.

High Energy Physics - Phenomenology