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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def cumulative_probabilities( self ):
 """ Cumulative sum of the relative probabilities for all possible jumps. Args: None Returns: (np.array):
 Cumulative sum of relative jump probabilities. """

        partition_function = np.sum( self.p )
        return np.cumsum( self.p ) / partition_function