

\subsection{\bf 5.4\hspace{1em} Hypothesis Testing---I}

\begin{slide}
\begin{itemize}
\item We wish to test a specific hypothesis $H_0$ (referred to as null
hypothesis) against a set of possible other hypotheses.

\item In goodness of fit analysis, we test $H_0$ (= hypothesis that
data described by claimed theory with parameters found from maximizing
$L$) against ``all'' other hypotheses.

\item If we are trying to find type of a particle then 

\begin{description}
\item{$\bullet$} $H_0$ might be particle is an electron, 
\item{$\bullet$} $H_1$, that is a pion and these could be only possibilities.  
\end{description}
\end{itemize}
\end{slide}

