  We present a combination of searches for the standard model Higgs boson using
the full CDF Run II data set, which corresponds to an integrated luminosity of
9.45--10.0 fb$^{-1}$ collected from $\sqrt{s}=1.96$ TeV $p{\bar{p}}$ collisions
at the Fermilab Tevatron. The searches consider Higgs boson production from
gluon-gluon fusion, vector-boson fusion, and associated production with either
a $W$ or $Z$ boson or a $t{\bar{t}}$ pair. Depending on the production mode,
Higgs boson decays to $W^+W^-$, $ZZ$, $b{\bar{b}}$, $\tau^+\tau^-$, and
$\gamma\gamma$ are examined. We search for a Higgs boson with masses ($m_H$) in
the range 90--200 GeV/$c^2$. In the absence of a signal, we expect based on
combined search sensitivity to exclude at the 95% credibility level the mass
regions $90<m_H<94$ GeV/$c^2$, $96<m_H<106$ GeV/$c^2$, and $153<m_H<175$
GeV/$c^2$. The observed exclusion regions are $90<m_H<102$ GeV/$c^2$ and
$149<m_H<172$ GeV/$c^2$. A moderate excess of signal-like events relative to
the background expectation at the level of 2.0 standard deviations is present
in the data for the $m_H=125$ GeV/$c^2$ search hypothesis. We also present
interpretations of the data within the context of a fermiophobic model and an
alternative standard model incorporating a fourth generation of fermions.
Finally, for the hypothesis of a new particle with mass 125 GeV/$c^2$, we
constrain the coupling strengths of the new particle to $W^\pm$ bosons, $Z$
bosons, and fermions.
