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\end{itemize}  \subsection{Example for hypothesis testing for one proportion}  Research conducted a few years ago showed that 35$\%$ of UCLA students had travelled outside the US. UCLA has recently implemented a new study abroad program and results of a new survey show that out of the 100 randomly sampled students 42 have travelled abroad. Is there significant evidence to suggest that the proportion of students at UCLA who have travelled abroad has increased after the implementation of the study abroad program?  \begin{itemize{ \begin{itemize}  \item population proportion used to 0.35  \item new sample proportion is 0.42  \item Testing the claim that the population proportion is now greater than 0.35 . 
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\item We do a formal hypothesis test to answer this question.  \end{itemize}  \section{Setting up Hypotheses}  \begin{itemize}  \item Null hypothesis, denoted by Ho, specifies a population model parameter of interest and proposes a value for that parameter (p). \[H_0: p=0.35\]  \item Alternative hypothesis, denoted by HA, is the claim we are testing for.\[H_A :p > 0.35\]